problems in calling C++ dll

[Xinghe.W]

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

Below is the source files of my Dll and dynamically calling program.

Dll:

Calling program.

[nyc_(is_out_of_here)]

So, now you want people to help you with C++ calling a C++ DLL problem here on a LabVIEW message board?

[zou]

Your Store subroutine indicates e is an array of 7 elements.

Your calling subroutine passes the address of the last element in the array (&e[7]).  Try &e[0].

[Xinghe.W]

thank you for your reply as I know the question is not very "Labview". I changed the array address like you said and the problem is still there. Attached is my calling program and dll, could you have a look at it for me please?

[zou]

For C/C++ issue, you would be better help in the LabWindows/CVI group:

http://forums.ni.com/t5/LabWindows-CVI/bd-p/180

[Xinghe.W · Accepted solution]

Problem solved.  The working dll for both C++ and Labview should be like this. The shared data segment should also be declared like funtion and with "extern "C"" ahead. In addition, Labview can only read pointers from dll.