文件列表:

9KJ6MSSCCPRJ.SCC (191, 2006-03-04)
bIkSimple.frm (7362, 2004-02-17)
Simple.vbp (868, 2004-02-17)
Simple.vbw (95, 2006-03-04)

Win32 Visual Basic SIMPLE Sample Application This directory contains the following: README.TXT - This readme file SIMPLE.VBP - Visual Basic project file SIMPLE.FRM - Visual Basic form file Description ----------- The Simple sample application was written to do writes and reads to a Tektronix PS2520G Programmable Power Supply. The application is a Win32 GUI application that was created using Microsoft Visual Basic 5.0. It illustrates how to use the NI-488.2 API. If you have Microsoft Visual Basic 4.0, a couple of sample applications are available on the Web. Please refer to the Language Interface Information in DOWNLOADS section at the following location: http://www.natinst.com/gpib/ Checking Status with Global Variables ------------------------------------- Each NI-488.2 call updates four global variables to reflect the status of the device or board that you are using. The four global variables are the status word (ibsta), the error variable (iberr), and the count variables (ibcnt and ibcntl). Your application should check for errors after each NI-488.2 call by looking at ibsta. The ERR bit in ibsta indicates if the call succeeded or not. If the ERR bit is set, iberr contains an error code. For a complete description of ibsta bits and iberr error codes, see the online help. If you are writing a multithreaded application, please refer to the online help on writing multithreaded applications. Compiling, Linking, and Running the Sample Application ------------------------------------------------------ To open the sample application, select OPEN PROJECT... from the FILE menu. In the OPEN PROJECT dialog box, click on SIMPLE.VBP to highlight it, and then click on the OPEN button. To compile the project and link it to the Visual Basic language interface, VBIB-32.BAS, select the MAKE SIMPLE.EXE... item from the FILE menu. To run the project, select the START item from the RUN menu. More Information ---------------- Refer to the NI-488.2 online help for more information on application development. Copyright National Instruments Corporation. All Rights Reserved.

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