problems in C++ dll call

Hi, I compiled a dll in C++ to write data in a shared data segment, and it works well in Labview. Then I try to call the Dll in C++, it can be built successfully, but will break in the end. I have this problem since almost a whole day and could not find the solution.

Here are the source files for my Dll and the program calling dynamically.

DLL:

Calling program.

Problem solved.  The work for Labview and C++ dll must be like that. The shared data segment must also be declared as funtion and with 'extern 'C' ' coming. In addition, Labview can read only pointers from dll.

Tags: NI Software

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