中国石油大学(华东)VC++实验六.doc

实验六 MFC定时器编程实验 实验目的 (1) 掌握 Visual Studio 开发环境调试程序的方法 ; (2) 掌握 MFC 消息映射的操作步骤 ; (3) 掌握 MFC 编程模式中定时器的使用方法 。 实验内容 设计一个窗口，在窗口中间位置绘制一个红色粗实线的矩形，并用交替使用三 种不同样式的画刷填充矩形的内部，每次刷新的时间间隔为 1.0 秒。 单击鼠标左键启动定时器，单击鼠标右键停止定时器。 实验报告 列出定时器操作相关的程序清单； 头文件： #include afxwin.h class CDemoWnd:public CFrameWnd { public: CDemoWnd(); ~CDemoWnd(); public: LRESULT OnPaint(WPARAM wParam,LPARAM lParam); LRESULT OnTimer(WPARAM wParam,LPARAM lParam); LRESULT OnLButtonDown(WPARAM wParam,LPARAM lParam); LRESULT OnRButtonDown(WPARAM wParam,LPARAM lParam); DECLARE_MESSAGE_MAP() public: int m; }; class CDemoApp:public CWinApp { public: BOOL InitInstance(); }; CDemoApp thisApp; 源文件： #include Demo.h CDemoWnd::CDemoWnd() { m=0; } CDemoWnd::~CDemoWnd() { } BEGIN_MESSAGE_MAP(CDemoWnd,CFrameWnd) ON_MESSAGE(WM_PAINT,OnPaint) ON_MESSAGE(WM_TIMER,OnTimer) ON_MESSAGE(WM_LBUTTONDOWN,OnLButtonDown) ON_MESSAGE(WM_RBUTTONDOWN,OnRButtonDown) END_MESSAGE_MAP() LRESULT CDemoWnd::OnLButtonDown(WPARAM wParam,LPARAM lParam) { SetTimer(1,1000,NULL); return 0; } LRESULT CDemoWnd::OnRButtonDown(WPARAM wParam,LPARAM lParam) { KillTimer(1); return 0; } LRESULT CDemoWnd::OnPaint(WPARAM wParam,LPARAM lParam) { CPaintDC dc(this); CPen Pen,*pOldPen; CBrush Brush,*pOldBrush; Pen.CreatePen(PS_SOLID,3,RGB(255,0,0)); switch(m) { case 0: Brush.CreateHatchBrush (HS_CROSS,RGB(0,255,0)); m++; break; case 1: Brush.CreateHatchBrush (HS_HORIZONTAL,RGB(0,0,255)); m++; break; case 2: Brush.CreateHatchBrush (HS_VERTICAL,RGB(0,255,255)); m=0; break; } pOldPen = dc.SelectObject(Pen); pOldBrush = dc.SelectObject(Brush); dc.Rectangle (300,200,600,500); dc.SelectObject(pOldPen); dc.SelectObject(pOldBrush); return TRUE; } LRESULT CDemoWnd::OnTimer(WPARAM wParam,LPARAM lParam) { CRect rt(300,200,600,500); InvalidateRect(rt); return 0; } BOOL CDemoApp::InitInstance() { CDemoWnd *pMainWnd = new CDemoWnd(); pMainWnd-Create(NULL,_T(Demo Min