Callback中的运行时错误，其中获得了动态调用另一个DLL的返回

Question

这次我试着更清楚。 我有一个主要的测试程序，调用Sinacor.DLL为它调用PasswordManager.dll一个3er部分dll没有代码（它是一个IDM系统）;

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Sinacor.DLL
...code ....
LPSTR  *GetSenha (int FAR nicas)  
.... code..... 
char * Mypwd = NULL; // for return porpouse
Mypwd = call dynamically PasswordManager.dll // works fine
return Mypwd; } // return the encrypted password, in test case return "sinacor01"
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Sinacor..h

extern "C" {     LPSTR FAR *GetSenha(int); }

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
the Sinacor.dll is also loaded dynamically too in the main program for testing:
the main  code: 

.....some code ..............                   
typedef LPSTR (CALLBACK *ULPRET)(int);         
LPSTR   Mypwd = " ";
hLib = LoadLibrary ( "C:\\Ricardo\\Sinacor\\Sinacor.dll");

lpfnDLLProc = (ULPRET) GetProcAddress (hLib,"GetSenha");      

Mypwd =   (*lpfnDLLProc)(0); //Got runtime error in this statement 

我现在是一个参数约定错误，为什么我将（main和Sinacor.dll）作为具有C约定的C程序进行了编译。堆栈将所有模块显示为具有C约定的C模块应该有效但不是。 请指教。

这两个程序都与_cstl（如CALLBACK）完成。