MFC Windows 程序设计源代码,有实用价值

				class CMyApp : public CWinApp
				{
				public:
				    virtual BOOL InitInstance ();
				};
				
				class CMainWindow : public CFrameWnd
				{
				public:
				    CMainWindow ();
				
				protected:
					//afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
				    afx_msg void OnPaint ();
				    DECLARE_MESSAGE_MAP ()
				};