在C ++中使用GetPorcAddress()时出错 [英] Error in using GetPorcAddress() in c++

问题描述

嗨
在代码中:

Hi
In the code:

HINSTANCE hinDLL;
hinDLL = LoadLibrary((LPCWSTR("WinSCard.dll"));
if (hinDLL != 0)
    {
              context=(EstablishContext) GetProcAddress(hinDLL,"SCardEstablishContext");

              listreaders=(ListReaders) GetProcAddress(hinDLL,"SCardListReaders");

              sconnect=(Connect) GetProcAddress(hinDLL,"SCardConnect");

              }
else{
     cout<<"Library failed to load\n";
     }
}

m在hinDLL和上下文中获取值，但在listreader和sconnect中获取未定义的值.

m getting values in hinDLL and context but getting undefined values in listreaders and sconnect.
Does GetProcAddress allow its use like i have done??

推荐答案

是的，如果您正确使用函数名...

SCardListReaders和SCardConnect具有窄字符和宽字符实现，分别为SCardListReadersA,SCardListReadersW和SCardConnectA,SCardConnectW

使用depends.exe检查DLL

Yes it does - if you get the function name right ...

SCardListReaders and SCardConnect have both narrow and wide char implementations, SCardListReadersA,SCardListReadersW and SCardConnectA,SCardConnectW respectively

Use depends.exe to examine the DLL

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