MFC应用：在视图窗口中间显示计数，功能：点击左键加1右键减1

来源：互联网发布：计算机软件编程编辑：程序博客网时间：2024/06/08 19:50

在左右键上添加代码实现点击加减1的控制：void CMy1View::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default    CMy1Doc* pDoc = GetDocument();    ASSERT_VALID(pDoc);     CClientDC dc(this);    dc.TextOut(10,10,pDoc->str);    CMy1Doc* pDoc = GetDocument();    ASSERT_VALID(pDoc);//计数左击键盘加1右击键盘减1 CRect rect; this->GetWindowRect(&rect); ++pDoc->num; pDoc->SetModifiedFlag(); this->Invalidate();  CView::OnLButtonDown(nFlags, point);}void CMy1View::OnRButtonDown(UINT nFlags, CPoint point) { // TODO: Add your message handler code here and/or call default  CMy1Doc* pDoc = GetDocument(); ASSERT_VALID(pDoc); CRect rect; this->GetWindowRect(&rect); --pDoc->num; pDoc->SetModifiedFlag(); this->Invalidate(); CView::OnRButtonDown(nFlags, point);}void CMy1View::OnMenuitem32773() { // TODO: Add your command handler code here CDialog my; my.DoModal();} //在视图菜单view.cpp文件中进行的操作：void CMy1View::OnDraw(CDC* pDC){ CMy1Doc* pDoc = GetDocument(); ASSERT_VALID(pDoc);CRect rect; this->GetWindowRect(&rect); int x = rect.Width() / 2; int y = rect.Height() / 2;    str.Format("计数%d",pDoc->num); pDC->TextOut(x,y,str);