VISA file link error __stdcall

[KRAvinash]

Dear Support person,

      I am using GPIB to control the power supply. I am using Visual Studio 2008   9.0 .When I compiled my code, I am getting 4 Link errors stating : unresolved external symbol _viread  in _wmain function, _viwrite in _wmain etc . When I traced back- viread defined to __stdcall. When I tried to trace back __stdcall, Vstudio popped up a message stating- __stdcall is undefined. Please help. OS I am using is Windows 7, 32 bit.

[smercurio_fc]

Have you actually added a reference to VISA in your project? Installation of VISA should install sample code. Have you taken a look at these?

[KRAvinash]

Reference in the sense : i have included visa.h file in my project

[smercurio_fc]

You have to include the actual library for the linker. The .h file is for the compiler. Have you tried to recompile the examples?

[KRAvinash]

Now I included the lib file also. It is working !! Thank you 🙂