代码如下:在view类加变量int ituxing,并在构造函数里赋值为ituxing=0;在OnDraw(CDC* pDC)函数上添上以下语句: void CMy1_1View::OnDraw(CDC* pDC){ CMy1_1Doc* pDoc = GetDocument(); ASSERT_VALID(pDoc); // TODO: add draw code for native data here //清除当前图形 CBrush mybrush1; mybrush1.CreateSolidBrush(RGB(255,255,255)); CRect myrect1(0,0,1024,768); pDC->FillRect(myrect1,&mybrush1); //判断当前图形ituxing if(ituxing==1) //ituxing=1,画矩形 pDC->Rectangle(20,20,89,89); else if(ituxing==2) //ituxing=2,画圆 pDC->Ellipse(20,20,89,89); else //否则,画三角形 { pDC->MoveTo(20,20); pDC->LineTo(89,45); pDC->LineTo(20,89); pDC->LineTo(20,20); }}d. 添加OnTimer(UINT nIDEvent)和OnCreate(LPCREATESTRUCT lpCreateStruct),并加上语句如下: void CMy1_1View::OnTimer(UINT nIDEvent) { // TODO: Add your message handler code here and/or call default //获取指针pdc CDC *pDC=GetDC(); //调用OnDraw(pDC)重画 OnDraw(pDC); //使ituxing循环 ituxing=(ituxing+1)%3; CView::OnTimer(nIDEvent);} int CMy1_1View::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CView::OnCreate(lpCreateStruct) == -1) return -1;
// TODO: Add your specialized creation code here //设置更新时间 SetTimer(1, 750, NULL); return 0;}运行结果就只显示一个三角形,不能变换其他图形。代码是网上下载的VC++游戏编程这电子书里面的!
// TODO: Add your specialized creation code here //设置更新时间 SetTimer(1, 750, NULL); return 0;}运行结果就只显示一个三角形,不能变换其他图形。代码是网上下载的VC++游戏编程这电子书里面的!
另外,你有没有用皮肤?
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
SetTimer(1, 750, NULL);
ituxing = 0;// 初始化一下。 return 0;}
void CMy1_1View::OnTimer(UINT nIDEvent){
ituxing=(ituxing+1)%3; // 为啥不这样写呢
Invalidate(FALSE); CView::OnTimer(nIDEvent);}