User`s guide

22 Agilent VISA User’s Guide
2 Building a VISA Application in Windows
3 Start a new Visual Basic Standard .exe project. VB 6.0
will open a new project, Project1, with a blank Form,
Form1.
4 From the menu, select Project > Add Module, select the
Existing tab, and browse to the idn directory. If you used
default installation paths, this directory is C:\
Program
Files\Agilent\IO Libraries Suite\
ProgrammingSamples\VB6\VISA\idn.
5 Select the file idn.bas and click Open. Since the Main()
subroutine is executed when the program is run without
requiring user interaction with a Form, you may delete
Form1 if desired. To do this, right- click Form1 in the
Project Explorer window and select Remove Form1.
6 VISA applications in Visual Basic require the VISA Visual
Basic (VB) declaration file visa32.bas in your VB
project. This file contains the VISA function definitions
and constant declarations needed to make VISA calls from
Visual Basic. To add this module to your project in VB
6.0, from the menu select Project > Add Module, select the
Existing tab, browse to the directory containing the VB
declaration file (by default, this is C:\Program
Files\
VISA\winnt\include\), select visa32.bas, and click
Open.
7 At this point, you can run and debug the Visual Basic
project. You may need to change the VISA interface name
and address in the code to match your device’s
configuration.
8 If you want to compile to an executable file, from the
menu select File > Make idn.exe... and click OK. This will
create idn.exe in the idn directory.
Sample Program Source Code
An explanation of the various function calls in the sample is
provided after this program listing. If the program runs
correctly, the following is an example of the output that
appears in a message box if your PC is connected to a
54601A oscilloscope.
HEWLETT-PACKARD,54601A,0,1.7