National Instruments 320682C - Manual

Contents LabWindows/CVI Standard Libraries xvi © National Instruments Corporation Tables Table 1-1. ANSI C Standard Library Classes .........................................................................1-1Table 1-2. C Locale Information Values ........................................................

© National Instruments Corporation xvii LabWindows/CVI Standard Libraries About This Manual The LabWindows/CVI Standard Libraries Reference Manual contains information about theLabWindows/CVI standard libraries—the Graphics Library, the Analysis Library, the Formattingand I/O Library, the GPIB Libra...

About This Manual © National Instruments Corporation xix LabWindows/CVI Standard Libraries Conventions Used in This Manual The following conventions are used in this manual: bold Bold text denotes a parameter, menu item, return value, functionpanel item, or dialog box button or option. italic Italic...

About This Manual LabWindows/CVI Standard Libraries xx © National Instruments Corporation The LabWindows/CVI Documentation Set For a detailed discussion of the best way to use the LabWindows/CVI documentation set, see thesection Using the LabWindows/CVI Documentation Set in Chapter 1, Introduction t...

© National Instruments Corporation 1-1 LabWindows/CVI Standard Libraries Chapter 1ANSI C Library This chapter describes the ANSI C Standard Library as implemented in LabWindows/CVI. Note: When you link your executable or DLL with an external compiler, you are using the ANSI C library of the external...

ANSI C Library Chapter 1 LabWindows/CVI Standard Libraries 1-2 © National Instruments Corporation Table 1-1. ANSI C Standard Library Classes (Continued) General Utilities <stdlib.h> String to Arithmetic Expression Random Number Generation Memory Management Searching and Sorting Integer Arithme...

Chapter 1 ANSI C Library © National Instruments Corporation 1-3 LabWindows/CVI Standard Libraries Table 1-2. C Locale Information Values Name Type C locale Value Description decimal_point char * "." Decimal point character for non-monetaryvalues. thousands_sep char * "" Non-monetary ...

ANSI C Library Chapter 1 LabWindows/CVI Standard Libraries 1-4 © National Instruments Corporation Under Windows, LabWindows/CVI implements the default locale by using the appropriate itemsfrom the Intl section of the WIN.INI file and appropriate Microsoft Windows functions. Anything not mentioned he...

Chapter 1 ANSI C Library © National Instruments Corporation 1-5 LabWindows/CVI Standard Libraries • islower maps to the Windows function isCharLower . • isupper maps to the Windows function isCharUpper . • tolower maps to the Windows function AnsiLower . • toupper maps to the Windows function AnsiUp...

ANSI C Library Chapter 1 LabWindows/CVI Standard Libraries 1-6 © National Instruments Corporation Input/Output Facilities The function rename fails if the target file already exists. Under Microsoft Windows, rename fails if the source and target files are on different disk drives. Under UNIX, rename...

Chapter 1 ANSI C Library © National Instruments Corporation 1-7 LabWindows/CVI Standard Libraries The AAA and BBB fields specify the names of the standard and daylight savings time zones, respectively (such as EST for Eastern Standard Time and EDT for Eastern Daylight Time). Theoptional sign field S...

ANSI C Library Chapter 1 LabWindows/CVI Standard Libraries 1-8 © National Instruments Corporation or by creating another .pif file. Refer to your Microsoft Windows documentation for help on creating and editing .pif files. If the function is passed a null pointer, LabWindows/CVI returns a non zero v...

Chapter 1 ANSI C Library © National Instruments Corporation 1-9 LabWindows/CVI Standard Libraries The UNIX version of LabWindows/CVI works with all the signals supported by UNIX inaddition to the ANSI C signals. ANSI C Library Function Reference For ANSI C function descriptions, consult a reference ...

ANSI C Library Chapter 1 LabWindows/CVI Standard Libraries 1-10 © National Instruments Corporation Parameter Discussion mode is the same as the mode parameter to fopen . You should use a mode value that is consistent with the mode in which you originally opened thefile. If you use write capabilities...

© National Instruments Corporation 2-1 LabWindows/CVI Standard Libraries Chapter 2Formatting and I/O Library This chapter describes the functions in the LabWindows/CVI Formatting and I/O Library, andcontains many examples of how to use them. The Formatting and I/O Library contains functionsthat inpu...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-2 © National Instruments Corporation Table 2-1. The Formatting and I/O Library Function Tree Formatting and I/O File I/O Open File OpenFile Close File CloseFile Read from File ReadFile Write to File WriteFile Array to File Arra...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-3 LabWindows/CVI Standard Libraries • The Data Formatting function panels perform intricate formatting operations with a singlefunction call. – Formatting Functions, a subclass of Data Formatting, contains function panels that...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-4 © National Instruments Corporation described in detail in the Using the Formatting and Scanning Functions section later in thischapter. You may find the formatting and scanning functions more difficult to learn than otherLabW...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-5 LabWindows/CVI Standard Libraries Return Value status integer Indicates success/failure. Return Codes 0 Success. -1 Error attempting to open file. -2 Error attempting to close file. -3 An I/O error occurred. -4 Invalid dataT...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-7 LabWindows/CVI Standard Libraries CloseFile int status = CloseFile ( int fileHandle); Purpose Closes the file associated with fileHandle. fileHandle is the file handle that was returned fromthe OpenFile function and specifie...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-8 © National Instruments Corporation Return Value result integer Result of the compareoperation. Return Codes -1 Bytes from buffer#1 less than bytes from buffer#2. 0 Bytes from buffer#1 identical to bytes from buffer#2. 1 Bytes...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-9 LabWindows/CVI Standard Libraries Return Value result integer Result of the compareoperation. Return Codes -1 Bytes from string#1 less than bytes from string#2. 0 Bytes from string#1 identical to bytes from string#2. 1 Bytes...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-10 © National Instruments Corporation Parameter Discussion Both sourceIndex and targetIndex are zero-based. You can use this function even when sourceBuffer and targetBuffer overlap. CopyString void CopyString ( char targetStri...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-11 LabWindows/CVI Standard Libraries FileToArray int status = FileToArray ( char *fileName, void *array, int dataType, int numberOfElements, int numberOfGroups, int arrayDataOrder, int fileLayout, int fileType); Purpose Reads ...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-13 LabWindows/CVI Standard Libraries FillBytes void FillBytes ( char buffer [] , int startingIndex, int numberofBytes, int value); Purpose Sets the numberofBytes bytes starting at position startingIndex of buffer to the value ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-14 © National Instruments Corporation Return Value ndx integer Index in buffer where patternwas found. Return Code -1 Pattern not found. Parameter Discussion The buffer searched is the set of numberofBytes bytes starting at pos...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-15 LabWindows/CVI Standard Libraries Parameters Input formatString String. source1,…,sourcen Types must match formatString contents. Output target Type must match formatString contents. Return Value n integer Number of source ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-16 © National Instruments Corporation Return Value n integer Number of source formatspecifiers satisfied. Return Codes -1 Format string error -2 I/O error. Using This Function The return value indicates how many source format s...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-17 LabWindows/CVI Standard Libraries Using This Function The return value indicates how many source format specifiers were satisfied, -1 if the format string is in error, or -2 if there was an I/O error. A complete discussion ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-18 © National Instruments Corporation GetFmtErrNdx int n = GetFmtErrNdx ( void ); Purpose Returns the zero-based index into the format string where an error occurred in the last formattingor scanning call. Parameters None Retur...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-19 LabWindows/CVI Standard Libraries error). If the last function that performs I/O encountered an I/O error, GetLastFmtIOErrorreturns a nonzero value. Return Value status integer Indicates success or failure of last function ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-20 © National Instruments Corporation NumFmtdBytes int n = NumFmtdBytes ( void ); Purpose Returns the number of bytes formatted or scanned by the previous formatting or scanning call. Parameters None Return Value n integer Numb...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-22 © National Instruments Corporation fileType specifies whether to treat file as ASCII or binary. When performing I/O on a file inbinary mode, no special treatment is given to carriage returns ( CR ) and line feeds ( LF ). Whe...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-23 LabWindows/CVI Standard Libraries Using This Function The return value can be less than number of bytes requested if end of file was reached beforebyte count was satisfied. Notice that if you open the file in ASCII mode, ea...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-24 © National Instruments Corporation carriage-return/linefeed combination will be treated as a linefeed. If fileHandle is zero, the linewill be read from the standard input. lineBuffer is a character buffer. It should be large...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-25 LabWindows/CVI Standard Libraries ScanFile int n = ScanFile ( int fileHandle, char *formatString, targetptr1,…,targetptrn); Purpose Performs the same basic operation as the Scan function, except that the source material is ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-26 © National Instruments Corporation Parameters Input formatString String. Output targetptr1,…,targetptrn Types must match formatString contents. Return Value n integer Number of target formatspecifiers satisfied. Return Codes...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-27 LabWindows/CVI Standard Libraries Return Value position long integer Offset of the new file pointerposition from the beginning ofthe file. Return Code -1 Error due to an invalid file handle, an invalid originvalue, or an of...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-28 © National Instruments Corporation result = WriteFile(handle, "Hello, World!", 13); if (result == -1) FmtOut("error writing to file"); } else FmtOut("error positioning file pointer"); CloseFile(handle...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-29 LabWindows/CVI Standard Libraries Return Value None StringUpperCase void StringUpperCase ( char string [] ); Purpose Converts all lowercase alphabetic characters in the NUL-terminated string to uppercase. Parameter Input/Ou...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-30 © National Instruments Corporation Return Code -1 Error. Parameter Discussion fileHandle is the file handle that was returned from the OpenFile function. If fileHandle =1 , data is written to STDOUT and no prior OpenFile cal...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-31 LabWindows/CVI Standard Libraries Return Code -1 I/O error. Parameter Discussion If numberofBytes is -1, only the bytes in lineBuffer before the first ASCII NUL are written,followed by a linefeed. fileHandle is the file han...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-32 © National Instruments Corporation Convert the integer value 23 to its ASCII representation and place the contents in a stringvariable: char a[5]; int b,n; b = 23; n = Fmt (a, "%s<%i", b); After the Fmt call, a co...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-33 LabWindows/CVI Standard Libraries Each of these formatting functions return the number of source format specifiers satisfied. If there is an error in the format string, -1 is returned. The formatting functions are used to f...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-35 LabWindows/CVI Standard Libraries f real number. This source or target specifier indicates that the corresponding parameter isa real number, or if rep is present, a real array. The function performs conversions to ASCII whe...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-36 © National Instruments Corporation the integer is converted to a string format. You can enter any non-negative valuehere. If n is less than the number of digits required to represent the integer, an asterisk ( * ) will be in...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-37 LabWindows/CVI Standard Libraries Note: When using both the b n and o n modifiers on an integer specifier, the b n modifier must be first. Formatting Floating-Point Modifiers (%f) bn Specify Length. The b floating-point mod...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-38 © National Instruments Corporation t Truncate. The t floating-point modifier indicates that in floating-point to integer transformations, the floating-point value is truncated instead of rounded. This is thedefault. r Round....

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-39 LabWindows/CVI Standard Libraries tn Terminate on Character. When applied to a source string, the t string modifier specifies that the source string is terminated on the first occurrence of the character n , where n is the ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-40 © National Instruments Corporation Fmt, FmtFile, FmtOut—Literals in the Format String Literal characters appearing in a formatting function format string indicate that the literalcharacters are to be combined with the source...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-41 LabWindows/CVI Standard Libraries Scanning Functions—Format String Consider the following scanning function: n = Scan(source, formatstring, targetptr1, ..., targetptrn); where formatstring contains the information to transf...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-42 © National Instruments Corporation formatcode is specified with one of the following codes: s string. As a source or target specifier this indicates that the corresponding parameter is acharacter string. As a source specifie...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-43 LabWindows/CVI Standard Libraries f real number. As a source or target specifier, this indicates that the correspondingparameter is a real number, or if rep is present, a real array. As a source specifier in conversions to ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-44 © National Instruments Corporation rn Specify Radix. The r integer modifier specifies the radix of the integer argument, which is important if the integer is converted from a string format. Legal radixes are8 (octal), 10 (de...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-47 LabWindows/CVI Standard Libraries than the number of bytes available from the source, the remaining bytes are filledwith ASCII NULs if the q modifier is used or blanks if the q modifier is not present. When the w modifier i...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-48 © National Instruments Corporation x Discard Terminator. When applied to a target string, the x modifier specifies that the terminating character be discarded before the next target is filled in. Using %s>%s[xt59]%s[xt59]...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-49 LabWindows/CVI Standard Libraries Some formats may have been correctly detected in the input, and the corresponding targetparameters will have been filled in. Formats situated after the literal which did not appear,however,...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-50 © National Instruments Corporation String to Integer and RealString to StringString to Integer and StringString to Real, Skipping over Non-Numeric Characters in the StringString to Real, after Finding a Semicolon in the Stri...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-51 LabWindows/CVI Standard Libraries Fmt (buf, "%s<%i[w6p0]", a); /* result: "001234" */ a = 1234; Fmt (buf, "%s<%i[w2]", a); /* result: "*4" */ Remarks The results shown are the contents ...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-52 © National Instruments Corporation Fmt (buf, "%s<%f[p0]", x); /* result: "12." */ x = 12.345; Fmt (buf, "%s<%f[p6]", x); /* result: "12.345000" */ x = -12.345; Fmt (buf, "%s<%f[w1...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-53 LabWindows/CVI Standard Libraries Integer and Real to String with Literals char buf[20]; int f, r; double v; f = 4; r = 3; v = 1.2; Fmt (buf, "%s<F%iR%i; V%f;", f, r, v); Remarks After the Fmt call, buf contains ...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-55 LabWindows/CVI Standard Libraries Real Array to Binary File, Assuming a Variable Number of Elements void StoreArray (double x[], int count, char filename[]) { int file_handle; file_handle = OpenFile (filename, 2, 0, 0); Fmt...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-56 © National Instruments Corporation Concatenating Two Strings char buf[30]; int wave_type, signal_output; char *wave_str, *signal_str; int nbytes; wave_type = 1; signal_output = 0; switch (wave_type) { case 0: wave_str = "...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-58 © National Instruments Corporation Writing a Line Containing an Integer with Literals to the Standard Output int a, b; a = 12; b = 34; FmtOut ("%s<A = %i\n", a); FmtOut ("%s<B = %i\n", b); Remarks In th...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-59 LabWindows/CVI Standard Libraries Scan/ScanFile/ScanIn Examples in C This section contains examples of program code that use the Scan , ScanFile , and ScanIn functions from the Formatting and I/O Library. To eliminate redun...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-60 © National Instruments Corporation Scan considers the occurrence of a non-numeric character (such as the x in 32x1 ) to mark the end of the integer. s = "32567"; n = Scan (s, "%s>%i[w3]", &a); /* resul...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-61 LabWindows/CVI Standard Libraries When locating a real number in a string, Scan skips over white space characters. If a non- numeric character other than a white space character, + , or - is found before the first numeric c...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-62 © National Instruments Corporation String to String char *s; char buf[10]; int n; s = " abc "; n = Scan (s, "%s>%s", buf); /* result: buf = "abc" */ s = " abc "; n = Scan (s, "%s>%s[...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-63 LabWindows/CVI Standard Libraries String to Integer and String char *s; char buf[10]; int a, n; s = "32abc"; n = Scan (s, "%s>%i%s", &a, buf); /* result: a = 32, buf = "abc", n = 2 */ s = "...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-64 © National Instruments Corporation String to Real, After Finding a Semicolon in the String char *s; double x; int n; s = "TIME 12:45:00; 7.34"; n = Scan (s, "%s>%s[xdt59]%f", &x); /* result: x = 7.34, ...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-65 LabWindows/CVI Standard Libraries String with Comma-Separated ASCII Numbers to Real Array char *s; int n; double a[5]; /* 5 8-byte real numbers */ s = "12.3, 45, 6.5, -1.3E-2, 4"; n = Scan (s, "%s>%5f[x]"...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-66 © National Instruments Corporation This code shows how to insert an ASCII NUL at the end of the transferred bytes. After theassignment, s is NUL-terminated. Integer Array to Real Array int ivals[100]; double dvals[100]; Scan...

Formatting and I/O Library Chapter 2 LabWindows/CVI Standard Libraries 2-68 © National Instruments Corporation The first call to Scan assumes that the real number is at the beginning of s . The second call assumes that the real number starts at the sixth byte of s . The i5 modifier causes the first ...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-69 LabWindows/CVI Standard Libraries then reads the correct number of elements into values . The x modifier causes the comma separators to be discarded. Binary File to Integer Array, Assuming a Fixed Number of Elements int rea...

Chapter 2 Formatting and I/O Library © National Instruments Corporation 2-71 LabWindows/CVI Standard Libraries writing beyond the end of filename . Notice that the width specified is one less than the size of filename . This allows room for the ASCII NUL that ScanIn appends at the end of filename . ...

© National Instruments Corporation 3-1 LabWindows/CVI Standard Libraries Chapter 3Analysis Library This chapter describes the functions in the LabWindows/CVI Analysis Library. The AnalysisLibrary Function Overview section contains general information about the Analysis Libraryfunctions and panels. T...

Chapter 3 Analysis Library © National Instruments Corporation 3-3 LabWindows/CVI Standard Libraries The classes and subclasses in the function tree are described here. • The Array Operations function panels perform arithmetic operations on 1D and 2D arrays. – 1D Operations, a subclass of Array Opera...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-4 © National Instruments Corporation large amounts of data. Large double-precision arrays consume a lot of memory. If theresults you want do not require that you keep the original array or intermediate arrays of data,perform analysis ope...

Chapter 3 Analysis Library © National Instruments Corporation 3-7 LabWindows/CVI Standard Libraries Return Value status integer Refer to error codes inTable 3-2. Copy1D int status = Copy1D ( double inputArray [] , int numberofElements, double outputArray [] ); Purpose Copies the elements of the inpu...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-8 © National Instruments Corporation Parameters Input xReal double-precision Real part of x. xImaginary double-precision Imaginary part of x. yReal double-precision Real part of y. yImaginary double-precision Imaginary part of y. Output ...

Chapter 3 Analysis Library © National Instruments Corporation 3-9 LabWindows/CVI Standard Libraries Return Value status integer Refer to error codes inTable 3-2. CxDiv int status = CxDiv ( double xReal, double xImaginary, double yReal, yImaginary, double *outputReal, double *outputImaginary); Purpos...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-10 © National Instruments Corporation CxDiv1D int status = CxDiv1D ( double arrayXReal [] , double arrayXImaginary [] , double arrayYReal [] , double arrayYImaginary) [] , int numberofElements, double outputArrayReal [] , double outputAr...

Chapter 3 Analysis Library © National Instruments Corporation 3-11 LabWindows/CVI Standard Libraries CxLinEv1D int status = CxLinEv1D ( double arrayXReal [] , double arrayXImaginary [] , int numberofElements, double aReal, double aImaginary, double bReal, double bImaginary, double outputArrayReal []...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-12 © National Instruments Corporation CxMul int status = CxMul ( double xReal, double xImaginary, double yReal, double yImaginary, double *outputReal, double *outputImaginary); Purpose Multiplies two complex numbers. The function obtains...

Chapter 3 Analysis Library © National Instruments Corporation 3-13 LabWindows/CVI Standard Libraries The function performs the operations in place; that is, the input and output complex arrays can bethe same. Parameters Input arrayXReal double-precisionarray Real part of x. arrayXImaginary double-pr...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-14 © National Instruments Corporation Parameters Input xReal double-precision Real part of x. xImaginary double-precision Imaginary part of x. Output outputReal double-precision Real part of y. outputImaginary double-precision Imaginary ...

Chapter 3 Analysis Library © National Instruments Corporation 3-15 LabWindows/CVI Standard Libraries CxSub1D int status = CxSub1D ( double arrayXReal [] , double arrayXImaginary [] , double arrayYReal [] , double arrayYImaginary [] , int numberofElements, double outputArrayReal [] , double outputArr...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-16 © National Instruments Corporation Determinant int status = Determinant ( void *inputMatrix, int matrixSize, double *determinant); Purpose Finds the determinant of a matrixSize by matrixSize 2D input matrix. Parameters Input inputMatr...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-18 © National Instruments Corporation Return Value status integer Refer to error codes inTable 3-2. DotProduct int status = DotProduct ( double vectorX [] , double vectorY [] , int numberofElements, double *dotProduct); Purpose Computes ...

Chapter 3 Analysis Library © National Instruments Corporation 3-19 LabWindows/CVI Standard Libraries GetAnalysisErrorString char *message = GetAnalysisErrorString ( int errorNum) Purpose Converts the error number returned by an Analysis Library function into a meaningful errormessage. Parameters Inp...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-20 © National Instruments Corporation Parameters Input inputArray double-precisionarray Input array. numberofElements integer Number of elements in Input Array. base double-precision Lower range. top double-precision Upper range. interva...

Chapter 3 Analysis Library © National Instruments Corporation 3-21 LabWindows/CVI Standard Libraries Return Value status integer Refer to error codes in nTable 3-2. LinEv1D int status = LinEv1D ( double inputArray [] , int numberofElements, double multiplier, double additiveConstant, double outputAr...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-22 © National Instruments Corporation LinEv2D int status = LinEv2D ( void *inputArray, int numberofRows, int numberofColumns, double multiplier, double additiveConstant, void *outputArray); Purpose Performs a linear evaluation of a 2D ar...

Chapter 3 Analysis Library © National Instruments Corporation 3-23 LabWindows/CVI Standard Libraries MatrixMul int status = MatrixMul ( void *matrixX, void *matrixY, int #ofRowsInX, int cols/rowsInX/Y, int #ofColumnsInY, void *outputMatrix); Purpose Multiplies two 2D input matrices. The function obt...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-24 © National Instruments Corporation MaxMin1D int status = MaxMin1D ( double inputArray [] , int numberofElements, double *maximumValue, int *maximumIndex, double *minimumValue, int *minimumIndex); Purpose Finds the maximum and minimum ...

Chapter 3 Analysis Library © National Instruments Corporation 3-25 LabWindows/CVI Standard Libraries Parameters Input inputArray double-precision2D array Input array. numberofRows integer Number of elements in firstdimension of inputArray. numberofColumns integer Number of elements in seconddimensio...

Chapter 3 Analysis Library © National Instruments Corporation 3-29 LabWindows/CVI Standard Libraries Sort int status = Sort ( double inputArray [] , int numberofElements, int direction, double outputArray [] ); Purpose Sorts the input array in ascending or descending order. The function performs the...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-32 © National Instruments Corporation Subset1D int status = Subset1D ( double inputArray [] , int numberofElements, int index, int length, double outputArray [] ); Purpose Extracts a subset of the inputArray input array containing the nu...

Chapter 3 Analysis Library © National Instruments Corporation 3-33 LabWindows/CVI Standard Libraries Parameters Input xReal double-precision X coordinate. yImaginary double-precision X coordinate. Output magnitude double-precision Magnitude. phaseRadians double-precision Phase (in radians). Return V...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-34 © National Instruments Corporation Parameters Input arrayXReal double-precisionarray X coordinate. arrayYImaginary double-precisionarray Y coordinate. numberofElements integer Number of elements. Output magnitude double-precisionarray...

Chapter 3 Analysis Library © National Instruments Corporation 3-35 LabWindows/CVI Standard Libraries Return Value status integer Refer to error codes inTable 3-2. ToRect1D int status = ToRect1D ( double magnitude [] , double phaseRadians [] , int numberofElements, double outputArrayReal [] , double ...

Analysis Library Chapter 3 LabWindows/CVI Standard Libraries 3-36 © National Instruments Corporation Transpose int status = Transpose ( void *inputMatrix, int numberofRows, int numberofColumns, void *outputMatrix); Purpose Finds the transpose of a 2D input matrix. The (ith, jth) element of the resul...

Chapter 3 Analysis Library © National Instruments Corporation 3-37 LabWindows/CVI Standard Libraries Error Conditions If an error condition occurs during a call to any of the functions in the LabWindows/CVIAnalysis Library, the status return value contains the error code. This code is a value thatsp...

© National Instruments Corporation 4-1 LabWindows/CVI Standard Libraries Chapter 4GPIB/GPIB-488.2 Library This describes the NI-488 and NI-488.2 functions in the LabWindows/CVI GPIB Library, aswell as the Device Manager functions in LabWindows/CVI. The GPIB Library FunctionOverview section contains ...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-2 © National Instruments Corporation Table 4-1. The GPIB Functions Library Function Tree GPIB/GPIB-488.2 Library Open/Close Open Device OpenDev Close Device CloseDev Close Instrument Devices CloseInstrDevs Find Board/Device ibfind...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-3 LabWindows/CVI Standard Libraries Table 4-1. The GPIB Functions Library Function Tree (Continued) Bus Control Send Interface Clear ibsic Become Active Controller ibcac Go to Standby ibgts Set/Clear Remote Enable ibsre Send Comm...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-4 © National Instruments Corporation Table 4-1. The GPIB Functions Library Function Tree (Continued) SRQ and Serial Polls Test SRQ line TestSRQ Wait for SRQ WaitSRQ Find Requesting Device FindRQS Read Status Byte ReadStatusByte Se...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-5 LabWindows/CVI Standard Libraries • The Bus Control function panels provide low-level control of the GPIB bus. • The Board Control function panels provide low-level control of the GPIB board. Thesefunctions are normally used wh...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-6 © National Instruments Corporation drivers are packaged with your GPIB interface board and are not included withLabWindows/CVI. LabWindows/CVI does not require any special procedures for installing andusing the device driver. Fo...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-7 LabWindows/CVI Standard Libraries Note: When writing instrument modules, you must use the Device Manager functions ( OpenDev and CloseDev ) instead of ibfind or ibdev . You must also use the Device Manager functions in applicat...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-8 © National Instruments Corporation included in the wait mask. Aside from the difficulty caused by ESRQ in waiting for RQS, theerror will have no detrimental effects on other GPIB operations. If you call the serial poll function ...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-9 LabWindows/CVI Standard Libraries • The last GPIB call was a board call. Autopolling is re-instated after a subsequent device call. • GPIB I/O is in progress. In particular, during asynchronous GPIB I/O, autopolling will not oc...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-10 © National Instruments Corporation Global Variables for the GPIB Library The following global variables are used by the GPIB Library and the GPIB-488.2 Library: • Status Word ( ibsta ) • Error ( ibcnt , ibcntl ) These variables...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-11 LabWindows/CVI Standard Libraries If you want to use GPIB under Windows 95 and you have an older board, it is recommended thatyou upgrade to one of the boards in this list. Compatibility Driver The compatibility driver is a 32...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-12 © National Instruments Corporation Notification of SRQ and Other GPIB Events Synchronous Callbacks Under Windows 3.1, you can use ibInstallCallback to specify a function to be called when an SRQ is asserted on the GPIB or when ...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-13 LabWindows/CVI Standard Libraries GPIB Function Reference Most of the functions in the GPIB/GPIB-488.2 Library are described in the software referencemanual that you received with your GPIB board. This section contains descrip...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-14 © National Instruments Corporation CloseInstrDevs int result = CloseInstrDevs ( char *instrumentPrefix); Purpose Closes instrument devices. Parameter Input instrumentPrefix string Must be null-terminated. Return Value result in...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-15 LabWindows/CVI Standard Libraries The callback function is called when any of the GPIB events specified in the Event Maskparameter have occurred on the board or device, but only while you allow the system to processevents. The...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-17 LabWindows/CVI Standard Libraries CallbackFunction The callback function must have the following form. void CallbackFunctionName ( int boardOrDevice, int mask, void * callbackData); The mask and callbackData parameters are the...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-19 LabWindows/CVI Standard Libraries SRQI, RQS, and Auto Serial Polling If you want to install a callback for the SRQI (board-level) event, Auto Serial Polling must be disabled. You can disable Auto Serial Polling with the follow...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-20 © National Instruments Corporation If invoked because an asynchronous I/O operation (started by ibrda , ibwrta , or ibcmda ) completed, the callback function should contain the following call: ibwait (boardOrDevice, TIMO | CMPL...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-21 LabWindows/CVI Standard Libraries OpenDev int bd = OpenDev ( char *deviceName, char *instrumentPrefix); Purpose Opens a GPIB device. Parameters Input deviceName string Must be null-terminated. instrumentPrefix string Must be n...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-22 © National Instruments Corporation ThreadIbcnt int threadSpecificCount = ThreadIbcnt ( void ); Note: This function is available only under Windows 95 and NT. This function returns the value of the thread-specific ibcnt variable...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-23 LabWindows/CVI Standard Libraries If you are not using multiple threads, the value returned by this function is identical to the valueof the ibcntl global variable. Parameters none Return Value threadSpecificCount longinteger ...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-24 © National Instruments Corporation Return Codes DefinedConstant Value Description EDVR 0 Operating system error. The system-specific error code is returned by ThreadIbcntl . ECIC 1 Function requires GPIB-PC to be CIC. ENOL 2 No...

Chapter 4 GPIB/GPIB-488.2 Library © National Instruments Corporation 4-25 LabWindows/CVI Standard Libraries See Also ThreadIbsta, ThreadIbcnt, ThreadIbcntl. ThreadIbsta int threadSpecificStatus = ThreadIbsta ( void ); Note: This function is available only under Windows 95 and NT. This function retur...

GPIB/GPIB-488.2 Library Chapter 4 LabWindows/CVI Standard Libraries 4-26 © National Instruments Corporation Return Codes The return value is a sum of the following bits. DefinedConstant Hex Value Condition ERR 8000 GPIB error. END 2000 END or EOS detected. SRQI 1000 SRQ is on. RQS 800 Device request...

© National Instruments Corporation 5-1 LabWindows/CVI Standard Libraries Chapter 5RS-232 Library This chapter describes the functions in the LabWindows/CVI RS-232 Library. The RS-232Library Function Overview section contains general information about the RS-232 Libraryfunctions and panels. The RS-23...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-2 © National Instruments Corporation Table 5-1. The RS-232 Library Function Tree (Continued) Read To File ComToFile Write Buffer ComWrt Write Byte ComWrtByte Write From File ComFromFile XModem XModem Send File XModemSend XModem Receive Fil...

Chapter 5 RS-232 Library © National Instruments Corporation 5-3 LabWindows/CVI Standard Libraries Using RS-485 You can use all of the functions in the RS-232 Library with the National Instruments RS-485AT-Serial board. The ComSetEscape function allows you to control the transceiver mode of the board...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-4 © National Instruments Corporation All functions, except the Open and Close functions, require the com port to be opened with OpenCom or OpenComConfig. If the program writes data to the output queue and then immediately closes the com po...

Chapter 5 RS-232 Library © National Instruments Corporation 5-5 LabWindows/CVI Standard Libraries All serial devices are either of the type Data Communication Equipment (DCE) or DataTransmission Equipment (DTE). The PC is of type DTE. The difference between the twodevices is in the meaning assigned ...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-6 © National Instruments Corporation application. Refer to the Hardware Handshaking section later in this chapter for moreinformation about using the lines 4, 5, 6, and 20. Another area that requires special attention is the gender of the ...

Chapter 5 RS-232 Library © National Instruments Corporation 5-7 LabWindows/CVI Standard Libraries Hardware Handshaking The SetCTSMode function enables hardware handshaking. For hardware handshaking to work, two conditions must exist. First, the serial devices must follow the same or similar hardware...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-8 © National Instruments Corporation – If the input queue of the port is nearly full, the library lowers RTS and DTR. – If the input queue of the port is nearly empty, the library raises RTS and DTR. – If the port is closed, the library lo...

Chapter 5 RS-232 Library © National Instruments Corporation 5-9 LabWindows/CVI Standard Libraries Parameter Discussion The function does nothing if the port numbers are invalid (port is not open or parameter value isnot in the range 1 through 32). ComBreak int result = ComBreak ( int COMPort, int br...

Chapter 5 RS-232 Library © National Instruments Corporation 5-11 LabWindows/CVI Standard Libraries ComRd int nbytes = ComRd ( int COMPort, char buffer [] , int count); Purpose Reads count bytes from input queue of the specified port and stores them in buffer. Returnseither on time-out or when count ...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-12 © National Instruments Corporation ComRdByte int byte = ComRdByte ( int COMPort); Purpose Reads a byte from the input queue of the specified port. Returns an integer whose low-order bytecontains the byte read. Returns either on time-out...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-14 © National Instruments Corporation ComSetEscape int result = ComSetEscape ( int COMPort, int escapeCode); Purpose Directs the specified com port to carry out an extended function such as clearing or setting theRTS signal line or setting...

Chapter 5 RS-232 Library © National Instruments Corporation 5-15 LabWindows/CVI Standard Libraries The following values may be used only with the RS-485 serial driver developed by NationalInstruments: WIRE_4 —Sets the transceiver to Four Wire Mode. WIRE_2_ECHO —Sets the transceiver to Two Wire DTR c...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-16 © National Instruments Corporation for ComRdTerm . If both count and terminationByte are disabled, the function terminates on error (which can include a time-out). Using This Function The function returns an error if the output queue re...

Chapter 5 RS-232 Library © National Instruments Corporation 5-17 LabWindows/CVI Standard Libraries the port, call GetOutQLen . GetOutQLen returns the number of bytes remaining in the output queue. The function returns an error if the port is not open or parameter values are invalid. Example /* Place...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-18 © National Instruments Corporation Parameter Discussion This function times out if the output queue has not been updated in the specified time-out period.This can occur if the output queue is full and no further data can be sent because...

Chapter 5 RS-232 Library © National Instruments Corporation 5-19 LabWindows/CVI Standard Libraries FlushOutQ int status = FlushOutQ ( int COMPort); Purpose Removes all characters from the output queue of the specified port. Parameter Input COMPort integer Range 1 through 32. Return Value status inte...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-20 © National Instruments Corporation Table 5-5. Bit Definitions for the GetComStat Function HexValue Mnemonic Description 0001 INPUT LOST Input queue filled and input characters lost (characterswere not removed fast enough). 0002 ASYNCH E...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-22 © National Instruments Corporation GetRS232ErrorString char *message = GetRS232ErrorString ( int errorNum) Purpose Converts the error number returned by an RS-232 Library function into a meaningful errormessage. Parameters Input errorNu...

Chapter 5 RS-232 Library © National Instruments Corporation 5-23 LabWindows/CVI Standard Libraries Note: The callback function may receive more than one event at a time. When using this function at higher baud rates, some LWRS_RXCHAR events may be missed. It is recommended to use LWRS_RECEIVE or LWR...

Chapter 5 RS-232 Library © National Instruments Corporation 5-25 LabWindows/CVI Standard Libraries The following table further describes the events. Event ConstantName Description LWRS_RXCHAR Set when any character is received and placed in thereceiving queue. LWRS_RXFLAG Set when the event characte...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-26 © National Instruments Corporation Return Value result integer Refer to error codes in Table 5-6. Parameter Discussion deviceName is the name of the com port in the ASCII string. For example, COM1 for com port 1 on Microsoft Windows usi...

Chapter 5 RS-232 Library © National Instruments Corporation 5-29 LabWindows/CVI Standard Libraries SetComTime int result = SetComTime ( int COMPort, double timeoutSeconds); Purpose Sets time-out limit for input/output operations. Parameters Input COMPort integer Range 1 through 32. timeoutSeconds do...

Chapter 5 RS-232 Library © National Instruments Corporation 5-31 LabWindows/CVI Standard Libraries SetXMode int result = SetXMode ( int COMPort, int mode); Purpose Enables or disables software handshaking by enabling or disabling XON/XOFF sensitivity ontransmission and reception of data. Parameters ...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-32 © National Instruments Corporation Parameters Input COMPort integer Range 1 through 32. startDelay double-precision 0.0 selects the default value10.0 seconds. maximum#ofRetries integer 0 selects the default value 10. waitPeriod double-p...

Chapter 5 RS-232 Library © National Instruments Corporation 5-33 LabWindows/CVI Standard Libraries for an acknowledgment before it re-sends the current packet. When LabWindows/CVI plays therole of receiver, it waits for up to waitPeriod seconds for the next packet after it sends out anacknowledgment...

Chapter 5 RS-232 Library © National Instruments Corporation 5-35 LabWindows/CVI Standard Libraries Return Value result integer Result of the XModem sendoperation. <0 Failure. 0 Success. Using This Function The file is opened in binary mode. Carriage returns and linefeeds are not treated as ASCIIc...

RS-232 Library Chapter 5 LabWindows/CVI Standard Libraries 5-36 © National Instruments Corporation Error Conditions If an error condition occurs during a call to any of the functions in the LabWindows/CVI RS-232Library, the function returns an error code and the global variable rs232err contains tha...

Chapter 5 RS-232 Library © National Instruments Corporation 5-37 LabWindows/CVI Standard Libraries Table 5-6. RS-232 Library Error Codes (Continued) -258 Packet not sent within retry limit. -259 Packet not received within retry limit. -260 End of transmission character encountered when start ofdata ...

© National Instruments Corporation 6-1 LabWindows/CVI Standard Libraries Chapter 6DDE Library This chapter describes the functions in the LabWindows/CVI DDE (Dynamic Data Exchange)Library. The DDE Library Function Overview section contains general information about theDDE Library functions and panel...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-2 © National Instruments Corporation DDE Clients and Servers Interprocess communication with DDE involves a client and a server in each DDE conversation.A DDE server can execute commands sent from another application, and send and receiveinfo...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-4 © National Instruments Corporation Table 6-2. DDE Transaction Types (xType) xType Server Client When ? DDE_CONNECT Y N When a new client requests aconnection. DDE_DISCONNECT Y Y When conversation partner quits. DDE_DATAREADY Y Y When conver...

Chapter 6 DDE Library © National Instruments Corporation 6-5 LabWindows/CVI Standard Libraries A DDE Library Example Using Microsoft Excel and LabWindows/CVI LabWindows/CVI includes a sample program called ddedemo.prj that uses DDE to send data to Microsoft Excel. The example program can be found in...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-6 © National Instruments Corporation When the DDE_DATAREADY transaction is received in the callback function, a numeric display is updated by passing the data pointer value to a numeric control on the UIR file.When the DDE event is DDE_DISCON...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-8 © National Instruments Corporation If successful, this function returns the number of bytes sent. Otherwise, this function returns anegative error code. See the help for the status control for the error code values. Note: Your program shoul...

Chapter 6 DDE Library © National Instruments Corporation 6-9 LabWindows/CVI Standard Libraries Parameter Discussion serverName, topicName, and itemName must be strings of length from 1 to 255. They are usedwithout regard to case. Using this Function This function allows your program, acting as a DDE...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-10 © National Instruments Corporation Purpose Called by client to send a command to be executed by a DDE server application. Parameters Input conversationHandle unsigned integer Uniquely identifies theconversation. commandString string Comman...

Chapter 6 DDE Library © National Instruments Corporation 6-11 LabWindows/CVI Standard Libraries dataFormat unsigned integer Valid data format; for example, CF_TEXT . dataSize unsigned integer Number of bytes to read.Limited to 64 KB underWindows 3.1 and Windows 95. timeout unsigned integer Timeout i...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-12 © National Instruments Corporation Purpose Called by client to write data to a DDE server application. Parameters Input conversationHandle unsigned integer Uniquely identifies theconversation. itemName string Uniquely identifies the output...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-14 © National Instruments Corporation clientCallbackFunction defines a callback function through which all messages from the serverwill be routed. The callback function must be of the following form: int (*ddeFuncPtr) (int handle, char *topic...

Chapter 6 DDE Library © National Instruments Corporation 6-15 LabWindows/CVI Standard Libraries DisconnectFromDDEServer int status = DisconnectFromDDEServer ( unsigned int conversationHandle); Purpose Disconnects your client program from a server application. Parameters Input conversationHandle unsi...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-16 © National Instruments Corporation Return Value message string Explanation of error. RegisterDDEServer int status = RegisterDDEServer ( char serverName [] , ddeFuncPtr serverCallbackFunction, void *callbackData); Purpose Registers your pro...

Chapter 6 DDE Library © National Instruments Corporation 6-17 LabWindows/CVI Standard Libraries DDE_DISCONNECTDDE_DATAREADYDDE_REQUESTDDE_ADVISELOOPDDE_ADVISESTOPDDE_EXECUTE DDE_CONNECT —This transaction type is received when a client is requesting a connection. The topicName parameter specifies the...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-18 © National Instruments Corporation This function registers your program as a DDE server with the specified name. Clientsattempting to connect to your program must use the specified name. Thereafter, all requests bythe client will be routed...

Chapter 6 DDE Library © National Instruments Corporation 6-19 LabWindows/CVI Standard Libraries ServerDDEWrite int status = ServerDDEWrite ( unsigned int conversationHandle, char itemName [] , unsigned int dataFormat, void *dataPointer, unsigned int dataSize, unsigned int timeout); Purpose Writes da...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-20 © National Instruments Corporation Refer to Microsoft programmers' documention for Windows 3.x for an in-depth discussion ofDDE programming and meaning of each data format type. Using This Function This function allows your program, acting...

Chapter 6 DDE Library © National Instruments Corporation 6-21 LabWindows/CVI Standard Libraries Return Value status integer Refer to error codes in Table 6-3. Parameter Discussion The itemName represents the information in the server application where the DDE link isestablished. For example, the ite...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-22 © National Instruments Corporation Parameter Discussion The itemName represents the information in the server application where the DDE link isestablished. For example, the item name could represent an Excel range of cells by using therang...

Chapter 6 DDE Library © National Instruments Corporation 6-23 LabWindows/CVI Standard Libraries UnregisterDDEServer int status = UnregisterDDEServer ( char serverName [] ); Purpose Unregisters your application program as a DDE server. Parameters Input serverName string Name of the server application...

DDE Library Chapter 6 LabWindows/CVI Standard Libraries 6-24 © National Instruments Corporation Table 6-3. DDE Library Error Codes Code Error Message 0 kDDE_NoError -1 -kDDE_UnableToRegisterService -2 -kDDE_ExistingServer -3 -kDDE_FailedToConnect -4 -kDDE_ServerNotRegistered -5 -kDDE_TooManyConversa...

© National Instruments Corporation 7-1 LabWindows/CVI Standard Libraries Chapter 7TCP Library This chapter describes the functions in the LabWindows/CVI TCP (Transmission ControlProtocol) Library. The TCP Library Function Overview section contains general informationabout the TCP Library functions a...

TCP Library Chapter 7 LabWindows/CVI Standard Libraries 7-2 © National Instruments Corporation TCP Clients and Servers Network communication using the TCP library involves a client and a server in each connection.A TCP server can send and receive information to and from a client application through ...

Chapter 7 TCP Library © National Instruments Corporation 7-3 LabWindows/CVI Standard Libraries program is invoked to process the request. The parameter prototypes for the TCP callbackfunctions in LabWindows/CVI are defined below: int CallbackFunction (int handle, int xType, int errCode, void *callba...

TCP Library Chapter 7 LabWindows/CVI Standard Libraries 7-4 © National Instruments Corporation Parameters Input conversationHandle unsigned integer Uniquely identifies theconversation. dataBuffer void pointer Buffer in which to receive data. dataSize unsigned integer Maximum number of bytes toread. ...

Chapter 7 TCP Library © National Instruments Corporation 7-5 LabWindows/CVI Standard Libraries Return Value status integer Returns the number of byteswritten, or a negative error codeif an error occurs; Refer to errorcodes in Table 7-3. See Also ConnectToTCPServer , ClientTCPRead ConnectToTCPServer ...

Chapter 7 TCP Library © National Instruments Corporation 7-7 LabWindows/CVI Standard Libraries See Also RegisterTCPServer , DisconnectFromTCPServer DisconnectFromTCPServer int status = DisconnectFromTCPServer ( unsigned int conversationHandle); Purpose Disconnects your client program from a server a...

TCP Library Chapter 7 LabWindows/CVI Standard Libraries 7-8 © National Instruments Corporation See Also RegisterTCPServer GetTCPErrorString char *message = GetTCPErrorString ( int errorNum) Purpose Converts the error number returned by a TCP Library function into a meaningful error message. Paramete...

Chapter 7 TCP Library © National Instruments Corporation 7-9 LabWindows/CVI Standard Libraries Return Value status integer Refer to error codes inTable 7-3. Parameter Discussion serverCallbackFunction is the name of the function to be called to process client requests. The callback function must be ...

Chapter 7 TCP Library © National Instruments Corporation 7-11 LabWindows/CVI Standard Libraries ServerTCPWrite int status = ServerTCPWrite ( unsigned int conversationHandle, void *dataPointer, unsigned int dataSize, unsigned int timeout); Purpose Writes data to a TCP client application. Parameters I...

TCP Library Chapter 7 LabWindows/CVI Standard Libraries 7-12 © National Instruments Corporation Return Value status integer Refer to error codes in Table 7-3. See Also RegisterTCPServer Error Conditions If an error condition occurs during a call to any of the functions in the LabWindows/CVI TCPLibra...

© National Instruments Corporation 8-1 LabWindows/CVI Standard Libraries Chapter 8Utility Library This chapter describes the functions in the LabWindows/CVI Utility Library. The UtilityLibrary contains functions that do not fit into any of the other LabWindows/CVI libraries. TheUtility Library Funct...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-2 © National Instruments Corporation Table 8-1. The Utility Library Function Tree (Continued) File Utilities Delete File DeleteFile Rename File RenameFile Copy File CopyFile Get File Size GetFileSize Get File Date GetFileDate Set File Dat...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-4 © National Instruments Corporation Table 8-1. The Utility Library Function Tree (Continued) Launching Executables Launch Executable LaunchExecutable Extended Functions Launch Executable Extended LaunchExecutableEx Has Executable Termina...

Chapter 8 Utility Library © National Instruments Corporation 8-5 LabWindows/CVI Standard Libraries • Standard Input/Output Window functions control various attributes of the StandardInput/Output Window. • Run-Time Error Reporting functions enable and disable the feature which breaks executionwhen a ...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-6 © National Instruments Corporation Breakpoint void Breakpoint ( void ); Purpose During execution of a program, a call to Breakpoint suspends program operation. While the program is suspended, you can inspect or modify variables, and use...

Chapter 8 Utility Library © National Instruments Corporation 8-7 LabWindows/CVI Standard Libraries Cls void Cls ( void ); Purpose In the LabWindows/CVI environment, this function clears the Standard I/O window. Parameters None Return Value None CopyFile int result = CopyFile ( char sourceFileName []...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-8 © National Instruments Corporation Parameter Discussion sourceFileName and targetFileName may contain wildcard characters ‘?’ and ‘*’. IfsourceFileName has wildcards, all matching files are copied. If targetFileName has wildcards,it wil...

Chapter 8 Utility Library © National Instruments Corporation 8-9 LabWindows/CVI Standard Libraries Return Value loaded integer Indicates whether the LabWindows/CVI low-levelsupport driver was loaded at startup. Return Codes 1 Low-level support driver was loaded at startup. 0 Low-level support driver...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-10 © National Instruments Corporation Parameter Input numberofSeconds double-precision Number of seconds to wait. Return Value None DeleteDir int result = DeleteDir ( char directoryName [] ); Purpose Deletes an existing directory. Paramet...

Chapter 8 Utility Library © National Instruments Corporation 8-11 LabWindows/CVI Standard Libraries Parameter Input fileName string File to delete. Return Value result integer Result of delete operation. Return Codes 0 Success. -1 File not found or directory in path not found. -3 General I/O error o...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-12 © National Instruments Corporation You can use this function in conjunction with EnableBreakOnLibraryErrors to temporarily suppress the Break on Library Errors feature around a segment of code. It does notaffect the state of the Break ...

Chapter 8 Utility Library © National Instruments Corporation 8-13 LabWindows/CVI Standard Libraries • The <Alt-Tab>, <Alt-Esc>, or <Ctrl-Esc> key combination under Windows 3.1 or Windows 95. • The Switch To item in the system menu under Windows 3.1. This function affects the behavi...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-14 © National Instruments Corporation your standalone application to be brought up in place of the Program Manager when Windowsboots. You can do this by changing the following line in your system.ini [boot] section. shell = progman.exe to...

Chapter 8 Utility Library © National Instruments Corporation 8-15 LabWindows/CVI Standard Libraries • Do not use the Standard I/O Window in your final application. • If you use any of the built-in pop-ups in the User Interface Library, make the following calls. SetSystemPopupsAttribute (ATTR_MOVABLE...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-16 © National Instruments Corporation Note: For you to be able to use this function under Windows 95, the LabWindows/CVI low- level support driver must be loaded. Note: Under Windows NT, the EnableInterrupts and DisableInterrupts function...

Chapter 8 Utility Library © National Instruments Corporation 8-17 LabWindows/CVI Standard Libraries Return Value status integer Result of operation. Return Codes -1 Handle is invalid. 0 Executable is still running. 1 Executable has been terminated. Note: If you launch another LabWindows/CVI executab...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-18 © National Instruments Corporation GetBreakOnProtectionErrors int state = GetBreakOnProtectionErrors ( void ); Purpose This function returns the state of the break on protection errors feature. It returns a 1 if theoption is enabled, o...

Chapter 8 Utility Library © National Instruments Corporation 8-19 LabWindows/CVI Standard Libraries Return Codes Nnn Where N.nn is the LabWindows/CVI version. GetCurrentPlatform int platformCode = GetCurrentPlatform ( void ); Purpose This function returns a code representing the operating system und...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-20 © National Instruments Corporation GetDir int result = GetDir ( char currentDirectory [] ); Purpose Gets the current working directory on the default drive. Parameter Output currentDirectory string Current directory. Return Value resul...

Chapter 8 Utility Library © National Instruments Corporation 8-21 LabWindows/CVI Standard Libraries Return Value result integer Result of operation. Return Codes 0 Success. -1 Current directory is on a network drive that is not mapped to a local drive.(currentDriveNumber is set correctly, but number...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-22 © National Instruments Corporation Return Codes 0 Success. -1 Out of memory. -4 Invalid file format. -5 Undefined references. -8 Cannot open file. -9 Invalid module ID. -10 Identifier not defined globally in module. -25 DLL initializat...

Chapter 8 Utility Library © National Instruments Corporation 8-23 LabWindows/CVI Standard Libraries GetFileAttrs int result = GetFileAttrs ( char fileName [] , int *read-only, int *system, int *hidden, int *archive); Note: Only available on the Windows version of LabWindows/CVI. Purpose Gets the fol...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-24 © National Instruments Corporation Parameter Discussion Each attribute parameter will contain one of the following values: 0—attribute is not set 1—attribute is set fileName may be the empty string ( "" ), in which case the att...

Chapter 8 Utility Library © National Instruments Corporation 8-25 LabWindows/CVI Standard Libraries Return Codes 0 Success. -1 File not found or directory in path not found. -3 General I/O error occurred. -4 Insufficient memory to complete operation. -5 Invalid path (for example, c:filename in Windo...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-26 © National Instruments Corporation Return Codes 0 Success. -1 File not found or directory in path not found. -3 General I/O error occurred. -4 Insufficient memory to complete operation. -5 Invalid path (for example, c:filename in Windo...

Chapter 8 Utility Library © National Instruments Corporation 8-29 LabWindows/CVI Standard Libraries Parameter Discussion searchPath may contain the wildcard characters '*' and '?'. Each attribute parameter can have one of the following values: 0— do not search for files with the attribute 1— search ...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-30 © National Instruments Corporation Using This Function This function is useful when your program needs to access a file in the project and you do notknow what directory the file is in. Example char *fileName; char fullPath[MAX_PATHNAME...

Chapter 8 Utility Library © National Instruments Corporation 8-31 LabWindows/CVI Standard Libraries Parameters None Return Value k integer Key code. Using This Function The values returned are the same as the key values used in the User Interface Library. See userint.h . Keystroke Return Value <b...

Chapter 8 Utility Library © National Instruments Corporation 8-33 LabWindows/CVI Standard Libraries GetNextFile int result = GetNextFile ( char fileName [] ); Purpose Gets the next file found in the search starting with GetFirstFile . Parameters Output fileName string Next file found. Return Value r...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-34 © National Instruments Corporation GetProjectDir int result = GetProjectDir ( char directoryName [] ); Purpose Gets the name of the directory containing the currently loaded project file. Parameters Output directoryName string Director...

Chapter 8 Utility Library © National Instruments Corporation 8-35 LabWindows/CVI Standard Libraries GetStdioPort void GetStdioPort ( int *stdioPort); Purpose Gets a value indicating the current destination for data written to the standard output (and thesource of data read from the standard input.) ...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-36 © National Instruments Corporation Parameters Output maxNumLines integer The maximum number of linesthat can be stored in the StandardInput/Output window. If thisamount is exceeded, lines arediscarded from the top. bringToFrontWhenModi...

Chapter 8 Utility Library © National Instruments Corporation 8-37 LabWindows/CVI Standard Libraries Parameters Output top integer The current distance, in pixels,from the top of client area of theStandard Input/Output windowto the top of the screen. left integer The current distance, in pixels,from ...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-38 © National Instruments Corporation Parameters Output visible integer 1 = Standard I/O window isvisible. 0 = Standard I/O window is notvisible. GetSystemDate int status = GetSystemDate ( int *month, int *day, int *year); Note: This func...

Chapter 8 Utility Library © National Instruments Corporation 8-39 LabWindows/CVI Standard Libraries GetSystemTime int status = GetSystemTime( int *hours, int *minutes, int *seconds); Note: This function is only available on the Windows version of LabWindows/CVI. Purpose Obtains the system time in nu...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-40 © National Instruments Corporation Parameters Output visible integer 0, if window is to be hidden;1, if window is to be displayed. zoomState integer ATTR_NO_ZOOM —normal display; ATTR_MINIMIZEATTR_MAXIMIZE . Return Value None Example I...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-42 © National Instruments Corporation /* your other DETACH code */ CloseCVIRTE (); } return 1; } Note: The prototypes for InitCVIRTE and CloseCVIRTE are in cvirte.h , which is included by utility.h . inp char byteRead = inp ( int portNumb...

Chapter 8 Utility Library © National Instruments Corporation 8-43 LabWindows/CVI Standard Libraries Parameters Input portNumber integer The port. Return Value wordRead short Word read from port. InStandaloneExecutable int standalone = InStandaloneExecutable( void ); Purpose Returns a non-zero value ...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-44 © National Instruments Corporation Return Codes 0 Key has not been pressed. 1 Key has been pressed. Using This Function The function returns 1 if a keystroke is available in the keyboard buffer, 0 otherwise. After akeystroke is availab...

Chapter 8 Utility Library © National Instruments Corporation 8-45 LabWindows/CVI Standard Libraries Refer to your DOS documentation for further help with command.com . DOS executables ( .exe , .com , and .bat files) use the settings in _default.pif (in your Windows directory) when they are running. ...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-46 © National Instruments Corporation Return Codes under Microsoft Windows 0 Command was successfully started. -1 System was out of memory, executable file was corrupt, or relocations were invalid. -3 File was not found. -4 Path was not f...

Chapter 8 Utility Library © National Instruments Corporation 8-47 LabWindows/CVI Standard Libraries LaunchExecutableEx int result = LaunchExecutableEx ( char *fileName, int windowState, int *handle); Purpose LaunchExecutableEx performs the same operation as LaunchExecutable with the following extend...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-48 © National Instruments Corporation A handle can be passed to ExecutableHasTerminated and TerminateExecutable . When you no longer need the handle, you should call RetireExecutableHandle . When you do not want to obtain a handle, you ca...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-50 © National Instruments Corporation Return Codes (Continued) -21 Could not load the DLL. -22 Could not find the DLL header file. -23 Could not load the DLL header file (out of memory or the file is corrupted). -24 Syntax error in the DL...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-52 © National Instruments Corporation 3. If the file has not been found and its extension is .dll , LoadExternalModule searches for the file in the directories specified in the Windows LoadLibrary call. If it is a relative pathname with o...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-54 © National Instruments Corporation command in the Build menu of the Project Window to create an object file containing the table.You must include this object file in the external compiler project you use to create the DLL. LoadExternal...

Chapter 8 Utility Library © National Instruments Corporation 8-55 LabWindows/CVI Standard Libraries Example /* make a new directory named \DATA\WAVEFORM on drive C /* /* assuming that C:\DATA does not exist */ MakeDir ("C:\\DATA"); MakeDir ("C:\\DATA\\WAVEFORM"); MakePathname void Ma...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-56 © National Instruments Corporation outp char byteWritten = outp( int portNumber, char byteToWrite); Note: This function is available only on the Windows versions of LabWindows/CVI. Purpose Writes a byte to a port. Note: For you to be a...

Chapter 8 Utility Library © National Instruments Corporation 8-57 LabWindows/CVI Standard Libraries ReadFromPhysicalMemory int status = ReadFromPhysicalMemory ( unsigned int physicalAddress, void *destinationBuffer, unsigned int numberOfBytes); Note: This function is available only on the Windows ve...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-58 © National Instruments Corporation ReadFromPhysicalMemoryEx int status = ReadFromPhysicalMemoryEx ( unsigned int physicalAddress, void * destinationBuffer, unsigned int numberOfBytes, int bytesAtATime); Note: This function is available...

Chapter 8 Utility Library © National Instruments Corporation 8-59 LabWindows/CVI Standard Libraries ReleaseExternalModule int status = ReleaseExternalModule ( int moduleID); Purpose Decreases the reference count for a module loaded using LoadExternalModule . When LoadExternalModule is called success...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-60 © National Instruments Corporation RenameFile int result = RenameFile ( char existingFileName [] , char newFileName [] ); Purpose Renames an existing file. Parameters Input existingFileName string Existing file name. newFileName string...

Chapter 8 Utility Library © National Instruments Corporation 8-61 LabWindows/CVI Standard Libraries Under UNIX, if the arguments to RenameFile specify files on different file systems, RenameFile copies the source to the target and then deletes the source file. RetireExecutableHandle int status = Ret...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-62 © National Instruments Corporation Return Value n long Result of the rounding operation. Example long n; n = round (1.2); /* result: 1L */ n = round (1.8); /* result: 2L */ n = round (1.5); /* result: 2L */ n = round (0.5); /* result: ...

Chapter 8 Utility Library © National Instruments Corporation 8-63 LabWindows/CVI Standard Libraries Parameter Discussion moduleID is the value LoadExternalModule returns. buffer is a character array in which you can pass information to and from the module. RunExternalModule requires that the module ...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-64 © National Instruments Corporation If debugging is disabled, this function has no effect. Run-time errors are never reported whendebugging is disabled. Parameters Input newState integer Pass a nonzero value to enable. Pass zero to disa...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-66 © National Instruments Corporation SetDir int result = SetDir ( char directoryName [] ); Purpose Sets the current working directory to the specified directory. Under Windows 3.1, this functioncan change the current working directory on...

Chapter 8 Utility Library © National Instruments Corporation 8-67 LabWindows/CVI Standard Libraries Return Value result integer Result of operation. Return Codes 0 Success. -1 Invalid drive number. Using This Function The mapping between the drive number and the logical drive letter is 0 = A, 1 = B,...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-68 © National Instruments Corporation Return Value result return value Result of operation. Return Codes 0 Success. -1 One of the following errors occurred: • File not found.• Attribute cannot be changed. Parameter Discussion Each attribu...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-70 © National Instruments Corporation SetFileTime int result = SetFileTime ( char fileName [] , int hours, int minutes, int seconds); Purpose Sets the time of a file. Parameters Input fileName string File to set date. hours integer Hours ...

Chapter 8 Utility Library © National Instruments Corporation 8-71 LabWindows/CVI Standard Libraries SetPersistentVariable void SetPersistentVariable ( int value); Purpose Lets you store an integer value across multiple builds and executions of your project in theLabWindows/CVI development environmen...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-72 © National Instruments Corporation Parameters Input stdioPort integer CVI_STDIO_WINDOW (0) = the CVI Standard Input/Outputwindow. HOST_SYSTEM_STDIO (1) = the host system's standardoutput. Return Value status integer Indicates whether t...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-74 © National Instruments Corporation showLineNumbers—In an executable, the default value is 0 ("do not show line numbers"). Inthe CVI Development System, the default value is the current state of the Line Numbers optionin the Vie...

Chapter 8 Utility Library © National Instruments Corporation 8-75 LabWindows/CVI Standard Libraries Parameter Discussion To vertically center the Standard Input/Output window client area within the area of the screen,pass VAL_AUTO_CENTER as the top parameter. To horizontally center the Standard Inpu...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-76 © National Instruments Corporation SetStdioWindowVisibility void SetStdioWindowVisibility ( int visible); Purpose Either brings to the front or hides the Standard Input/Output window. Parameters Input visible integer 1 = Standard I/O w...

Chapter 8 Utility Library © National Instruments Corporation 8-77 LabWindows/CVI Standard Libraries SetSystemTime int status = SetSystemTime( int hours, int minutes, int seconds); Note: This function is only available on the Windows version of LabWindows/CVI. Under Windows NT, you must have system a...

Chapter 8 Utility Library © National Instruments Corporation 8-79 LabWindows/CVI Standard Libraries SyncWait void SyncWait ( double beginTime, double interval); Purpose Waits until the number of seconds indicated by interval have elapsed since beginTime. Parameters Input beginTime double-precision V...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-80 © National Instruments Corporation Parameters Input helpFile string Points to a string containing thehelp file that the Helpapplication is to display. command unsigned integer Specifies the type of helprequested. additionalLongData uns...

Chapter 8 Utility Library © National Instruments Corporation 8-81 LabWindows/CVI Standard Libraries HELP_CONTEXTPOPUP —Displays in a pop-up window a particular Help topic identified by a context number that has been defined in the [ MAP ] section of the .HPJ file. The main help window is not display...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-82 © National Instruments Corporation TerminateExecutable int status = TerminateExecutable ( int executableHandle); Purpose Attempts to terminate an executable if it has not already terminated. Under Windows the system terminates an execu...

Chapter 8 Utility Library © National Instruments Corporation 8-83 LabWindows/CVI Standard Libraries Timer double t = Timer ( void ); Purpose Returns the number of seconds that have elapsed since the first call to Timer , Delay , or SyncWait or the first operation on a timer control. The value is nev...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-84 © National Instruments Corporation TruncateRealNumber double y = TruncateRealNumber ( double inputRealNumber); Purpose Truncates the fractional part of inputRealNumber and returns the result as a real number. Parameters Input inputReal...

Chapter 8 Utility Library © National Instruments Corporation 8-85 LabWindows/CVI Standard Libraries Example int module_id; int status; char *pathname' pathname = "PROG.OBJ"; module_id = LoadExternalModule (pathname); if (module_id <0) FmtOut ("Unable to load %s\n", pathname); else...

Utility Library Chapter 8 LabWindows/CVI Standard Libraries 8-86 © National Instruments Corporation Return Value status integer Indicates whether the functionsucceeded. Return Codes 1 Success. 0 Failure reported by the operating system, or low-levelsupport driver not loaded. WriteToPhysicalMemoryEx ...

© National Instruments Corporation 9-1 LabWindows/CVI Standard Libraries Chapter 9X Property Library _____________________________________________________________________________ This chapter describes the functions in the Lab/Windows CVI X Property Library. The XProperty Library contains functions ...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-2 © National Instruments Corporation Table 9-1. The X Property Library Function Tree Accessing Remote Hosts Connect To X Server ConnectToXDisplay Disconnect From X Server DisconnectFromXDisplay Managing Property Types Create New Proper...

Chapter 9 X Property Library © National Instruments Corporation 9-3 LabWindows/CVI Standard Libraries With the LabWindows/CVI X Property Library functions, you can connect to X displays andobtain the root window ID, read and write properties on windows, and monitor when specificproperties change. Pr...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-4 © National Instruments Corporation not delete it, the property remains there indefinitely. Second, because there is only one rootwindow, there may be conflicts when multiple applications attempt to access the same properties. To over...

Chapter 9 X Property Library © National Instruments Corporation 9-5 LabWindows/CVI Standard Libraries Table 9-3. X Property Library Error Types and Descriptions Constant Name Value Description NoXErr 0 The function was successful. InvalidParamXErr -1 The value passed to one or more of the parameters...

Chapter 9 X Property Library © National Instruments Corporation 9-7 LabWindows/CVI Standard Libraries Using the Library Outside of LabWindows/CVI You can use the LabWindows/CVI X Property Library in applications developed outside ofLabWindows/CVI. By linking your program with the library file libxpr...

Chapter 9 X Property Library © National Instruments Corporation 9-9 LabWindows/CVI Standard Libraries See Also Refer to the Xlib Programming Manual or to Xlib—C Language X Interface, MIT X ConsortiumStandard for more information about the XOpenDisplay and DefaultRootWindow functions. _______________...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-10 © National Instruments Corporation Return Values The return value indicates the success or failure status of the function call. A negative valueindicates an error. The following table shows status values. NoXErr 0 The function was s...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-12 © National Instruments Corporation Parameter Discussion Usually, you can use the expression sizeof ( TYPE ) for the size parameter, where TYPE is the C data type ( char , int , and others) used to store the property value. This valu...

Chapter 9 X Property Library © National Instruments Corporation 9-13 LabWindows/CVI Standard Libraries Parameter Input property PropertyHandleX Handle to the property information to bedestroyed. This value must either be oneof the predefined property types or be avalue returned by CreateXPropType . ...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-14 © National Instruments Corporation Return Values The return value indicates the success or failure status of the function call. A negative valueindicates an error. The following table shows status values. NoXErr 0 The function was s...

Chapter 9 X Property Library © National Instruments Corporation 9-15 LabWindows/CVI Standard Libraries See Also Refer to the Xlib Programming Manual or to Xlib—C Language X Interface, MIT X ConsortiumStandard for more information about the XCloseDisplay function. GetXPropErrorString char *message = ...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-16 © National Instruments Corporation Warning: The propertyName pointer points to memory allocated by CreateXProperty . You must not attempt to free this pointer or to change its contents. Return Values The return value indicates the s...

Chapter 9 X Property Library © National Instruments Corporation 9-17 LabWindows/CVI Standard Libraries Return Values The return value indicates the success or failure status of the function call. A negative valueindicates an error. The following table shows status values. NoXErr 0 The function was s...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-18 © National Instruments Corporation See Also CreateXPropType GetXPropTypeSize PropLibXErrType status = GetXPropTypeSize ( PropTypeHandleX propertyType, unsigned int *size); Purpose Gets a property type size. This function returns the...

Chapter 9 X Property Library © National Instruments Corporation 9-19 LabWindows/CVI Standard Libraries GetXPropTypeUnit PropLibXErrType status = GetXPropTypeUnit ( PropTypeHandleX propertyType, unsigned int *unit); Purpose Get a property type unit. This function returns the unit associated with the ...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-20 © National Instruments Corporation GetXWindowPropertyItem PropLibXErrType status = GetXWindowPropertyItem ( DisplayPtrX display, WindowX window, PropertyHandleX property, void *propertyItem); Purpose Get a single property item from ...

X Property Library Chapter 9 LabWindows/CVI Standard Libraries 9-22 © National Instruments Corporation See Also Refer to the Xlib Programming Manual or to Xlib—C Language X Interface, MIT X ConsortiumStandard for more information about the XGetWindowProperty function. GetXWindowPropertyValue PropLib...

Chapter 9 X Property Library © National Instruments Corporation 9-23 LabWindows/CVI Standard Libraries Parameters Input display DisplayPtrX A pointer to the display of theX server to which the windowbelongs. window WindowX The window from which theproperty value is to be obtained. property PropertyH...

Chapter 9 X Property Library © National Instruments Corporation 9-25 LabWindows/CVI Standard Libraries See Also Refer to the Xlib Programming Manual or to Xlib—C Language X Interface, MIT X ConsortiumStandard for more information about the XGetWindowProperty function. InstallXPropertyCallback PropLi...

Chapter 9 X Property Library © National Instruments Corporation 9-27 LabWindows/CVI Standard Libraries default root window of the display used by LabWindows/CVI. Use &CVIXHiddenWindow to specify the hidden window associated with your application. If numberofProperties is 0 or the propertyList va...

Chapter 9 X Property Library © National Instruments Corporation 9-29 LabWindows/CVI Standard Libraries PutXWindowPropertyValue PropLibXErrType status = PutXWindowPropertyValue ( DisplayPtrX display, WindowX window, PropertyHandleX property, unsigned int numberofItems, int mode, void *propertyValue);...

Chapter 9 X Property Library © National Instruments Corporation 9-31 LabWindows/CVI Standard Libraries The following values are valid for the mode parameter: ReplaceXPropMode —Replace the existing property value with the new value. PrependXPropMode —Add the new property value to the beginning of the...

Chapter 9 X Property Library © National Instruments Corporation 9-33 LabWindows/CVI Standard Libraries UninstallXPropertyCallback PropLibXErrType status = UninstallXPropertyCallback ( PropertyCallbackTypeX *callbackFunction); Purpose Uninstall a property callback function. After a callback function ...

© National Instruments Corporation 10-1 LabWindows/CVI Standard Libraries Chapter 10Easy I/O for DAQ Library This chapter describes the functions in the Easy I/O for DAQ Library. The Easy I/O for DAQLibrary Function Overview section contains general information about the functions, andguidelines and...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-2 © National Instruments Corporation The Easy I/O for DAQ functions are device independent which means that you can use the samefunction on a Lab series board, an MIO board, an EISA-A2000 or SCXI module. Limitations of Using th...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-3 LabWindows/CVI Standard Libraries Table 10-1. Easy I/O for DAQ Function Tree (Continued) Digital Input/Output Read From Digital Line ReadFromDigitalLine Read From Digital Port ReadFromDigitalPort Write To Digital Line WriteT...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-4 © National Instruments Corporation Device Numbers The first parameter to most of the Easy I/O for DAQ functions is the device number of the DAQdevice you want to use for the given operation. After you have followed the instal...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-5 LabWindows/CVI Standard Libraries • If you are using a Lab-PC+, DAQCard-500/700/1200, DAQPad-1200, PC-LPM-16:These devices can only sample input channels in descending order, and you must end withchannel 0 ( "3:0" )....

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-6 © National Instruments Corporation Command Strings You can use command strings within the Channel String to set per-channel limits and aninterchannel sample rate. For example, "cmd hi 10.0 low -10.0; 7:4; cmd hi 5.0 low -...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-7 LabWindows/CVI Standard Libraries Channel String for Analog Output Functions The second parameter to most of the analog output functions is the channel string containing theanalog output channels that are to be driven. Refer...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-8 © National Instruments Corporation Easy I/O for DAQ Function Reference This section describes each function in the Easy I/O for DAQ Library. The function descriptionsare arranged alphabetically. AIAcquireTriggeredWaveforms sh...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-11 LabWindows/CVI Standard Libraries For example, if the A/D conversions (represented by x 's) on the waveform shown below are placed side-by-side, they represent one cycle of the waveform. _ _ _ x _ _ _ / \ / \ x \ / \ / x / ...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-12 © National Instruments Corporation When the A/D conversions are placed side-by-side, they represent the original waveform as if ithad been sampled at a high frequency. x x x x x x x edgeSlope specifies whether the trigger oc...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-13 LabWindows/CVI Standard Libraries waveforms is an array containing the voltages acquired on the channels specified in thechannelString. The acquired voltages are placed into the array in the order specified byfillMode. This...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-14 © National Instruments Corporation Return Value error shortinteger Refer to error codes in Table 10-5. Parameter Discussion channelString is the analog input channels that are to be sampled. Refer to the Channel Stringfor An...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-15 LabWindows/CVI Standard Libraries AICheckAcquisition short error = AICheckAcquisition ( unsigned long taskID, unsigned long * scanBacklog); Purpose This function can be used to determine the backlog of scans that have been ...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-16 © National Instruments Corporation AIReadAcquisition short error = AIReadAcquisition ( unsigned long taskID, long scanstoRead, unsigned short readMode, unsigned long * scanBacklog, short fillMode, double waveforms [] ); Purp...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-17 LabWindows/CVI Standard Libraries from the internal circular buffer, where n is scanstoRead. Calling AIReadAcquisition in this mode resets the scanBacklog to zero. scanBacklog returns the backlog of scans that have been acq...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-19 LabWindows/CVI Standard Libraries AIStartAcquisition short error = AIStartAcquisition ( short device, char channelString [] , int bufferSize, double scansPerSecond, double highLimitVolts, double lowLimitVolts, double * actu...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-20 © National Instruments Corporation AOClearWaveforms short error = AOClearWaveforms ( unsigned long taskID); Purpose This function clears the waveforms generated by AOGenerateWaveforms when you passed 0 for its Iterations par...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-22 © National Instruments Corporation updatesPerChannel is the number of D/A conversions that compose a waveform for a particularchannel. If updatesPerChannel is 10, then each waveform is composed of 10 elements from thewavefor...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-23 LabWindows/CVI Standard Libraries Parameters Input device short integer Assigned by configuration utility. singleChannel string The analog output channel to which the voltage areapplied. voltage double The voltage that is a...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-24 © National Instruments Corporation Parameter Discussion channelString is the analog output channels to which the voltages are applied. Refer to theChannel String for Analog Output Functions subsection of the Easy I/O for DAQ...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-25 LabWindows/CVI Standard Libraries Parameters Input device shortinteger Assigned by configuration utility. counter string The counter to be used for the counting operation. frequency double The desired repetition rate of the...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-26 © National Instruments Corporation gateMode specifies how the signal on the counter's GATE pin is used. The options are: • UNGATED_SOFTWARE_START —ignore the gate signal and start when CounterStart is called. • COUNT_WHILE_G...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-28 © National Instruments Corporation • If you use TWO_COUNTERS , counter+1 is cascaded with the specified counter. Counter+1 is defined as shown in Table 10-3. Table 10-3. Definition of Am 9513: Counter +1 counter counter+1 1 ...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-29 LabWindows/CVI Standard Libraries sourceEdge is the edge of the counter source or timebase signal on which it increments, and thisparameter accepts the following attributes: • COUNT_ON_RISING_EDGE • COUNT_ON_FALLING_EDGE ga...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-32 © National Instruments Corporation Return Value error shortinteger Refer to error codes in Table 10-5. Parameter Discussion counter is the counter to be used for the counting operation. The valid counters are shown inTable 1...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-34 © National Instruments Corporation CounterStop short error = CounterStop ( unsigned long taskID); Purpose Stops a count operation immediately. Parameters Input taskID unsignedlong integer The reference number assigned to the...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-36 © National Instruments Corporation • pulseWidth is the desired duration of the pulse (phase 2) after the delay • The unit is seconds if timebaseSource is USE_INTERNAL_TIMEBASE and cycles if timebaseSource is USE_COUNTER_SOUR...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-37 LabWindows/CVI Standard Libraries FrequencyDividerConfig short error = FrequencyDividerConfig ( short device, char counter [] , double sourceTimebase, double timebaseDivisor, unsigned short gateMode, unsigned short outputBe...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-40 © National Instruments Corporation GetAILimitsOfChannel short error = GetAILimitsOfChannel ( short device, char channelString [] , char singleChannel [] , double initialHighLimitVolts, double initialLowLimitVolts, double * h...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-41 LabWindows/CVI Standard Libraries initialHighLimitVolts specifies the maximum voltage that is measured for all channels in thechannel string listed before a command string that specifies a new high limit. For the followingc...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-42 © National Instruments Corporation Parameters Input device short integer Assigned by configuration utility. channelString string The analog channel string. channelSubString string A sub-string of the channelString. channelTy...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-43 LabWindows/CVI Standard Libraries Parameters Input device short integer Assigned by configuration utility. channelString string Analog input channels that are to be sampled. index long integer The index of a particular chan...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-44 © National Instruments Corporation GetNumChannels short error = GetNumChannels ( short device, char channelString [] , short channelType, unsigned long * numberOfChannels); Purpose Determines the number of channels contained...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-45 LabWindows/CVI Standard Libraries If you acquire data in "grouped by scan" mode, you need to reorder the array into "grouped bychannel" mode before it can be passed to graph plotting functions, analysis func...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-47 LabWindows/CVI Standard Libraries • 5: I_HARDWARE_TRIGGERED_STROBE —similar to mode 4, except that a rising edge at the gate input triggers the count to start. • 6: I_READ —read the counter and return the value in the readV...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-48 © National Instruments Corporation PulseWidthOrPeriodMeasConfig short error = PulseWidthOrPeriodMeasConfig ( short device, char counter [] , unsigned short typeOfMeasurement, double sourceTimebase, unsigned long * taskID); P...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-49 LabWindows/CVI Standard Libraries Parameter Discussion typeOfMeasurement identifies the type of pulse width or period measurement to make. Thisparameter accepts the following attributes: • MEASURE_HIGH_PULSE_WIDTH —measure ...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-51 LabWindows/CVI Standard Libraries • The portWidth for the 8255-based digital I/O ports (including all digital ports on Labboards, SCXI-1200, DAQPad-1200, DAQCard-1200, DIO-24, DIO-32F, DIO-96, andAT-MIO-16DE-10/AT-MIO-16D p...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-52 © National Instruments Corporation Return Value error short integer Refer to error codes in Table 10-5. Parameter Discussion portNumber specifies the digital port this function configures. A portNumber value of 0 signifies p...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-53 LabWindows/CVI Standard Libraries SetEasyIOMultitaskingMode void SetEasyIOMultitaskingMode ( int multitaskingMode); Purpose By default, if you call the non-timed Easy I/O for DAQ functions repetitively, these functions dono...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-55 LabWindows/CVI Standard Libraries • The portWidth for the 8255-based digital I/O ports (including all digital ports on Labboards, SCXI-1200, DAQPad-1200, DAQCard-1200, DIO-24, DIO-32F, DIO-96, andAT-MIO-16DE-10/AT-MIO-16D p...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-59 LabWindows/CVI Standard Libraries Table 10-5. Easy I/O for DAQ Error Codes (Continued) -10091 badIterationsErr The analog output buffer iterations count is invalid. It must be 0(for indefinite iterations) or 1. -10100 badPo...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-61 LabWindows/CVI Standard Libraries Table 10-5. Easy I/O for DAQ Error Codes (Continued) -10414 reservedPinErr Selected signal indicates a pin reserved by NI-DAQ. You cannotconfigure this pin yourself. -10440 sysOwnedRsrcErr ...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-62 © National Instruments Corporation Table 10-5. Easy I/O for DAQ Error Codes (Continued) -10457 badDMAGroupErr DMA cannot be configured for the specified group because it istoo small, too large, or misaligned. Consult the use...

Chapter 10 Easy I/O for DAQ Library © National Instruments Corporation 10-63 LabWindows/CVI Standard Libraries Table 10-5. Easy I/O for DAQ Error Codes (Continued) -10614 badGroupDirErr The specified group does not support the specified transferdirection. -10615 masterClkErr The clock configuration ...

Easy I/O for DAQ Library Chapter 10 LabWindows/CVI Standard Libraries 10-64 © National Instruments Corporation Table 10-5. Easy I/O for DAQ Error Codes (Continued) -10684 badChanInputModeErr All channels of this device must have the same inputrange. -10685 clkExceedsBrdsMaxConvRate The clock rate se...

© National Instruments Corporation A-1 LabWindows/CVI Standard Libraries Appendix ACustomer Communication For your convenience, this appendix contains forms to help you gather the information necessaryto help us solve technical problems you might have as well as a form you can use to comment onthe p...

Customer Communication Appendix A LabWindows/CVI Standard Libraries A-2 © National Instruments Corporation FTP Support To access our FTP site, log on to our Internet host, ftp.natinst.com , as anonymous and use your Internet address, such as [email protected] , as your password. The support file...

Technical Support Form Photocopy this form and update it each time you make changes to your software or hardware, and use the completedcopy of this form as a reference for your current configuration. Completing this form accurately before contactingNational Instruments for technical support helps ou...

Hardware and Software Configuration Form Record the settings and revisions of your hardware and software on the line to the right of each item. Complete anew copy of this form each time you revise your software or hardware configuration, and use this form as areference for your current configuration...

Documentation Comment Form National Instruments encourages you to comment on the documentation supplied with our products. Thisinformation helps us provide quality products to meet your needs. Title: LabWindows ® /CVI Standard Libraries Reference Manual Edition Date: July 1996 Part Number: 320682C-0...

© National Instruments Corporation G-1 LabWindows/CVI Standard Libraries Glossary Prefix Meaning Value n- nano- 10 -9 µ - micro- 10 -6 m- milli- 10 -3 k- kilo- 10 3 M- mega- 10 6 Numbers/Symbols 1D One-dimensional. 2D Two-dimensional. A A Analog input. A/D Analog-to-digital. AC Alternating current. ...

Glossary © National Instruments Corporation G-5 LabWindows/CVI Standard Libraries K KB Kilobytes of memory. kS 1,000 samples. ksamples 1,000 samples. L LSB Least significant bit. M manual scaling Where SetAxRange is called to explicitly set the maximum and minimum X and Y values. MB Megabytes of mem...

© National Instruments Corporation I-1 LabWindows/CVI Standard Libraries Index Numbers/Symbols 1D array functions. See one-dimensional array operation functions. 1D complex operation functions. See one- dimensional complex operation functions. 2D array functions. See two-dimensional array operation ...

Index © National Instruments Corporation I-3 LabWindows/CVI Standard Libraries B Beep function, 8-5board control functions, GPIB, 4-7board control functions, GPIB Library, 4-3break on library error functions DisableBreakOnLibraryErrors, 8-11 to 8-12 EnableBreakOnLibraryErrors, 8-15GetBreakOnLibraryE...

Index LabWindows/CVI Standard Libraries I-4 © National Instruments Corporation CxRecip, 3-13 to 3-14CxSub, 3-14CxSub1D, 3-15ToPolar, 3-32 to 3-33ToPolar1D, 3-33 to 3-34ToRect, 3-34 to 3-35ToRect1D, 3-35 ComRd function, 5-11ComRdByte function, 5-12ComRdTerm function, 5-12 to 5-13ComSetEscape function...

Index LabWindows/CVI Standard Libraries I-6 © National Instruments Corporation DisconnectTCPClient function, 7-7Div1D function, 3-16 to 3-17Div2D function, 3-17 to 3-18documentation conventions used in manual, xixLabWindows/CVI documentation set, xxorganization of manual, xvii-xviiirelated documenta...

Index © National Instruments Corporation I-7 LabWindows/CVI Standard Libraries error conditions Analysis Library functions, 3-37DDE Library functions, 6-23 to 6-24Easy I/O for DAQ Library, 10-57 to 10-66 RS-232 Library functions, 5-36 to 5-37TCP Library functions, 7-12 Error control, GPIB, 4-6Error ...

Index © National Instruments Corporation I-9 LabWindows/CVI Standard Libraries integer modifiers (%i, %d, %x, %o, %c), 2-35 to 2-37 string modifiers (%s), 2-38 to 2-39 FrequencyDividerConfig function, 10-37 to 10-39 G gender changer, 5-6GetAILimitsOfChannel function, 10-40 to 10-41 GetAnalysisErrorS...

Index LabWindows/CVI Standard Libraries I-10 © National Instruments Corporation hardware interrupts and autopolling, 4-8 to 4-9 overview, 4-1platform and board considerations, 4-10 to 4-11 read and write termination, 4-9status and error controls, 4-6timeouts, 4-9Windows 95 support, 4-10 to 4-11 comp...

Index © National Instruments Corporation I-11 LabWindows/CVI Standard Libraries hardware interrupts and autopolling, 4-8 to 4-9 InvMatrix function, 3-20 to 3-21 K keyboard utility functions GetKey, 8-30 to 8-31KeyHit, 8-43 to 8-44 L LaunchExecutable function, 8-44 to 8-46LaunchExecutableEx function,...

Index © National Instruments Corporation I-13 LabWindows/CVI Standard Libraries R read termination, GPIB, 4-9ReadFile function, 2-22 to 2-23ReadFromDigitalLine function, 10-49 to 10-51 ReadFromDigitalPort function, 10-51 to 10-52 ReadFromPhysicalMemory function, 8-57ReadFromPhysicalMemoryEx function...

Index © National Instruments Corporation I-15 LabWindows/CVI Standard Libraries SetStdioWindowOptions function, 8-72 to 8-74 SetStdioWindowPosition function, 8-74 to 8-75 SetStdioWindowSize function, 8-75SetStdioWindowVisibility function, 8-76SetSystemDate function, 8-76SetSystemTime function, 8-77S...

Index © National Instruments Corporation I-19 LabWindows/CVI Standard Libraries PutXWindowPropertyValue, 9-29 to 9-31 RemoveXWindowProperty, 9-31 to 9-32 UninstallXPropertyCallback, 9-4, 9-33void HandlePropertyNotifyEvent, 9-7void_InitXPropertyLib, 9-7 function tree (table), 9-2hidden window, 9-3ove...