c++ - Access global variable in runtime-linked dll -

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I need to use the Global variable of some legacy DLL in run time. I have a header file for global variable definition Is 

  struct CmpSys {public: static const int NAME_LEN = 21; Four SJNM [NAME_LEN]; // user-defined system name}

global variable is a c ++ Dll is packed in 

  CmpSys ** gapCmpSys

In my CPP file I 

  hDEWModelDll = LoadLibrary ( L "DEWModel.dll"); (CMPSIS **) PTRCMPSIs = (CMPSIS **) GETPROCODERES (HDWodeldale, "GpsCMPCS");

The debugger shows that there is a valid address of ptrCmpSys (not a null), but the content is absolutely wrong.

If I write 

  ptrCmpSys [0] -> SzNam

I'll get a weird chat string.

What should I do?


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