problem in DLL and calling conventions

[sachin871]

Hi Paul...

As you said, I changed the impementation for the dll functions to use char* instead of std::string. But I am still getting the same error...

I am not using any macro for calling conventions and also not specifying any calling convetion while declaring/defing the function.

I am posting the code for the dll as well as client below...

//ActivatorShimWrapper.h
//declaration 
bool GenerateSerialNumber(const char* strActivationCode, const char* strVID, const char* strPID, char* strSerialNumber);

//CActivatorShimWrapper.cpp
//
bool CActivatorShimWrapper::GenerateSerialNumber(const char* szActivationCode, const char* szVID, const char* szPID, char* szSerialNumber)
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState());
	
	string strActivationCode(szActivationCode);
	string strVID(szVID);
	string strPID(szPID);
	
	//validate parameters
	if(	0 == strActivationCode.length() ||
		0 == strVID.length() ||
		0 == strPID.length() 
		)
	{
		return false;
	}
}

Client :

typedef bool (*GenerateSerialNumber)(const char* strActivationCode, const char* strVID, const char* strPID, char* strSerialNumber);
...
...

void CTestActivatorShimDlg::OnBnClickedOk()
{
	HMODULE hModule = LoadLibrary("C:\\Portal_VC8\\KeyPoint\\ActivatorShimDll\\debug\\ActivatorShimDll.dll");
		
	GenerateSerialNumber ptrGenerate;
	ptrGenerate = (GenerateSerialNumber)GetProcAddress(hModule,"GenerateSerialNumber");
	
	bool bRet = true;
	char* szRes = new char[10];
	memcpy(szRes,"",10);
	string str2("");
	
	bRet = ((*ptrGenerate)(str2.c_str(),str2.c_str(),str2.c_str(),szRes));
		
	delete []szRes;
	FreeLibrary(hModule);

}

Thanks...