Can not add MFC support to Windows Application

Hi

We can add MFC support to console apps but hhy can't we add MFC support to Windows application?

I tried this:

Code:

---

#include <afx.h>
#include <afxwin.h>
#include <afxext.h>

CWinApp theApp;


int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
        DWORD dwErrorCode;
        CString strErrorMessage;
        if(!(AfxWinInit(hInstance, hPrevInstance, (LPTSTR)lpCmdLine, nShowCmd)))
        {
                dwErrorCode = GetLastError();
                strErrorMessage.Format(L"Error is = %d", dwErrorCode);
                AfxMessageBox(strErrorMessage);

        }

        HANDLE hFile = CreateFile(L"\\\\.\\C:\\a.txt", GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
                CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
       
        CString cs;

        if(hFile == INVALID_HANDLE_VALUE)
        {
                dwErrorCode = GetLastError();
                strErrorMessage.Format(L"Error is = %d", dwErrorCode);
                AfxMessageBox(strErrorMessage);
        };

        CloseHandle(hFile);

        return 0;
}

---

It is compiled and executed but only CWinApp theApp; line is executed, before Winmain starts program exit. Why is it so?

Thanks...

Because MFC runs it's main through the CWinApp. The first function is CWinApp::InitInstance.

OK. But this works:

Code:

---

#include <afx.h>
#include <afxwin.h>
#include <afxext.h>

CWinApp theApp;

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
        DWORD dwErrorCode;
        CString strErrorMessage;
        if(!(AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)))
        {
                dwErrorCode = GetLastError();
                strErrorMessage.Format(L"Error is = %d", dwErrorCode);
                AfxMessageBox(strErrorMessage);

        }

        HANDLE hFile = CreateFile(L"\\\\.\\C:\\al.txt", GENERIC_WRITE, FILE_SHARE_WRITE, NULL,
                CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);


        if(hFile == INVALID_HANDLE_VALUE)
        {
                dwErrorCode = GetLastError();
                strErrorMessage.Format(L"Error is = %d", dwErrorCode);
                AfxMessageBox(strErrorMessage);
        };

        CloseHandle(hFile);

        return 0;
}

---

Why WinMain() doesn't work but _tmain() works?