class CWin  
{
public:
	CWin( HINSTANCE app_inst );
	virtual ~CWin();

    bool MakeWindow( std::string title, RECT Res );
    bool ProcessMessages( MSG &msg );
    static LRESULT CALLBACK WndProc( HWND hwnd, UINT msg, WPARAM w_param, LPARAM l_param );

private:
    WNDCLASSEX ClassInfo;
    HWND hwnd;
};
  

  
CWin::CWin( HINSTANCE app_inst )
{
    WNDCLASSEX WndClass =
    {
        sizeof( WNDCLASSEX ),               // cbSize

        CS_HREDRAW | CS_VREDRAW,            // style

        WndProc,                            // lpfnWndProc

        0, 0,                               // cbClsExtra, cbWndExtra

        app_inst,                           // hInstance

        LoadIcon( NULL, IDI_APPLICATION ),  // hIcon

        LoadCursor( NULL, IDC_ARROW ),      // hCursor

        (HBRUSH)GetStockObject( WHITE_BRUSH ),  // hbrBackground

        NULL,                               // lpszMenuName

        "lpszClassName",                    // lpszClassName

        LoadIcon( NULL, IDI_WINLOGO )       // hIconSm

    };

    ClassInfo = WndClass;
}

CWin::~CWin()
{
    DestroyWindow( hwnd );
}

bool CWin::MakeWindow( std::string title, RECT Res )
{
    if( 0 == RegisterClassEx( &ClassInfo ) )
        return false;

    hwnd = CreateWindowEx(
        NULL,                               // dwExStyle

        ClassInfo.lpszClassName,            // lpClassName

        title.c_str(),                      // lpWindowName

        WS_OVERLAPPEDWINDOW | WS_VISIBLE,   // dwStyle

        Res.left, Res.top,                  // x, y

        Res.right, Res.bottom,              // nWidth, nHeight

		NULL,                               // hWndParent

		NULL,                               // hMenu

		ClassInfo.hInstance,                // hInstance

		NULL );                             // lpParam


    if( NULL == hwnd )
        return false;

    return true;
}

LRESULT CALLBACK CWin::WndProc( HWND hwnd, UINT msg, WPARAM w_param, LPARAM l_param )
{
    switch( msg )
    {
        case WM_CLOSE:			            // Windows is closing

            DestroyWindow( hwnd );
            PostQuitMessage( 0 );
            return 0;
            break;

        default:
            break;
    }

    return DefWindowProc( hwnd, msg, w_param, l_param );
}

bool CWin::ProcessMessages( MSG &msg )
{
    if( PeekMessage( &msg, hwnd, NULL, NULL, PM_REMOVE ) )
    {
        if( msg.message == WM_QUIT )
        {
            return false;
        }
        else
        {
            TranslateMessage( &msg );
            DispatchMessage( &msg );
        }
    }

    return true;
}
  

  
int APIENTRY WinMain( HINSTANCE hInstance,
                      HINSTANCE hPrevInstance,
                      LPSTR     lpCmdLine,
                      int       nCmdShow )
{
    CWin        MyWin( hInstance );

    RECT rect = { 0, 0, 800, 600 };

    if( false == MyWin.MakeWindow( "My Window", rect ) )
    {
        MessageBox( NULL, "MakeWindow", "ERROR", MB_OK );
        return 0;
    }

    MSG	        msg;

    while( MyWin.ProcessMessages( msg ) )
    {
        // Do Stuff

    }

	return msg.wParam;
}