三个c++的MFC编程详细步骤概要1.docx

2-7 编写一个绘图程序，程序运行后，当用户在客户区窗口按下鼠标左键并移动时，根据鼠标移动的轨迹绘制出指定的线段。第一步：在这添加（红色加粗字体）class CMFC_52View : public CView{protected: // create from serialization onlyCPoint m_ptOrigin;bool m_bDragging;HCURSOR m_hCross;第二步：在这添加（红色加粗字体）CMFC_52View::CMFC_52View(){m_bDragging=false;m_hCross=AfxGetApp()-LoadStandardCursor(IDC_CROSS);// TODO: add construction code here}第三步：击鼠标右键打开类向导，添加WM_LBUTTONDOMN;WM_MOUSEMOVE;WM_LBUTTONUP;如图：然后在添加（红色加粗字体）：void CMFC_52View::OnLButtonDown(UINT nFlags, CPoint point) {SetCapture();::SetCursor(m_hCross);m_ptOrigin=point;m_bDragging=TRUE;// TODO: Add your message handler code here and/or call defaultCView::OnLButtonDown(nFlags, point);}void CMFC_52View::OnMouseMove(UINT nFlags, CPoint point) {// TODO: Add your message handler code here and/or call defaultif(m_bDragging){CClientDC dc(this);dc.MoveTo(m_ptOrigin);dc.LineTo(point);m_ptOrigin=point;}CView::OnMouseMove(nFlags, point);}void CMFC_52View::OnLButtonUp(UINT nFlags, CPoint point) {// TODO: Add your message handler code here and/or call defaultif(m_bDragging){m_bDragging=false;ReleaseCapture();}CView::OnLButtonUp(nFlags, point);}第四步：在这添加（红色加粗字体）：BOOL CMFC_52App::InitInstance(){AfxEnableControlContainer();。。。// The one and only window has been initialized, so show and update it.m_pMainWnd-ShowWindow(SW_SHOW);m_pMainWnd-UpdateWindow();m_pMainWnd-SetWindowText(简单的绘图程序);return TRUE;}效果图：THE END~2-8编写一个多文档程序，添加菜单项“绘图”，并为之添加菜单命令“直线”“圆”“矩形”“多边形”。当选中某个菜单后，在其对于的菜单命令前划一个勾，并把选择的结构显示在视图里。第一步：在这进行菜单添加，如图：（双击空白框即可进行编辑）第二步：打开类向导，添加菜单命令处理函数，如图：第三步：一一添加完八个函数确定后，点Edit Code,添加如下函数：（红色加粗字体）void CMFC_53View::OnMfc53Line() {CClientDC dc(this);dc.TextOut(100,100,直线);// TODO: Add your command handler code herem_mode=MODE_LINE;}void CMFC_53View::OnMfc53Rectangle() {CClientDC dc(this);dc.TextOut(200,200,矩形);// TODO: Add your command handler code herem_mode=MODE_RECTANGLE;}void CMFC_53View::OnMfc53Polygon() {CClientDC dc(this);dc.TextOut(150,150,多边形);// TODO: Add your command handler code herem_mode=MODE_POLYGON;}void CMFC_53Vie