Hi Dug,
I dig out the problem!
Even though , the dll is generated in the visual studio C++ 2010, it still need to use C/C++ adpater.
The error of C/C++ adpater i encountered because that the teststand support the "_stdcall" convenion and i use the default "cdecl" in my C++ dll.
Thanks for your help again. it do help me a lot!