CreateDialog in dll return error 1814 ERROR_RESOURCE_NAME_NOT_FOUND

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C++

MFC

DLL

I developed a regular dll for my mfc app.Loading the dll using afxLoadLibrary and geting the function exported in the dll using GetProcAddress both worked well ,but i got an error 1814 when processing the CreateDialog function in the dll.In the msdn ,i got the idea that the dll used by mfc should add AFX_MANAGE_STATE(AfxGetStaticModuleState( )) at the begining of every function in the dll,but it didn't work.
There is a dialog template resource in the dll. I also tried AfxSetResourceHandle,but it didn'd work.

HMODULE exd = AfxLoadLibrary("exd.dll");
if( mem!=NULL ){
    ::AfxSetResourceHandle((HINSTANCE)exd);
    MyPROC myproc = (MyPROC)::GetProcAddress(exd,"proc");
    if( myproc!=NULL) {
        (*myproc)(::GetModuleHandle(NULL),NULL);
    }else{
        MessageBox("Load Function error","Error",NULL);
    }
}else{
    MessageBox("Load Dll error","Error",NULL);
}

The Code in the dll:

extern "C"  __declspec(dllexport)  void proc(HINSTANCE hInstance = NULL ,HWND parent = NULL)
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState());//it does not work....
        HINSTANCE hr = ::AfxFindResourceHandle(MAKEINTRESOURCE(IDD_MEMORYCORNER),RT_DIALOG);//it finds the resource!!
	if( hr == NULL ){
		MessageBox(NULL,"Find Resource Failed","DLL Error Code",NULL);
	}else{
		::AfxSetResourceHandle(hr);//i dont know whether it works,The 1814 continued being there.
	}
	HWND hDlg = ::CreateDialog(hInstance,MAKEINTRESOURCE(IDD_MEMORYCORNER),parent,DlgProc); //Error 1814 but MAKEINTRESOURCE(IDD_MEMORYCORNER)!=0
	if( hDlg  != NULL ){
		ShowWindow(hDlg ,SW_NORMAL);
		MSG msg;
		while( GetMessage(&msg,hDlg ,NULL,NULL)){
			::IsDialogMessage(hDlg ,&msg);
		}
	}
	::itoa(::GetLastError(),membuf,10);
	MessageBox(NULL,membuf,"DLL Error Code",NULL);
}

Anyone helps,thanks.