程序代码：

extern "C" __declspec(dllexport) void * __cdecl CreateSocket(const GUID & Guid, DWORD dwInterfaceVer)
{
    //建立对象
    CClientSocket * pClientSocket=NULL;
    try
    {
        pClientSocket=new CClientSocket();
        if (pClientSocket==NULL) throw TEXT("失败");
        void * pObject=pClientSocket->QueryInterface(Guid,dwInterfaceVer);
        if (pObject==NULL) throw TEXT("失败");
        return pObject;
    }
    catch (...) {}
    //清理
    SafeDelete(pClientSocket);
    return NULL;
}