VC6新建一个多文档项目；根据窗口标题的最后数字，绘制不同图形；

void CPrdView::OnDraw(CDC* pDC)
{CPrdDoc* pDoc = GetDocument();ASSERT_VALID(pDoc);// TODO: add draw code for native data hereCString str1 = pDoc->GetTitle();CPoint pt[4];//起点pt[0].x = 20;pt[0].y = 20; //第一条线终点pt[1].x = 20;pt[1].y = 160; //第二条线终点pt[2].x = 150;pt[2].y = 140; //回到起点pt[3].x = 20;pt[3].y = 20;CRgn rgn;CBrush brush;int ti = atoi(str1.Right(1));switch(ti){case 1:pDC->Rectangle(5,5,150,150);break;case 2:pDC->Ellipse(5,5,150,150);break;case 3:pDC->Ellipse(5,5,250,150);break;case 4:pDC->Arc(5,5,250,100,5,100,250,100);break;case 5:		 pDC->Polygon(pt,3);break;case 6:rgn.CreatePolygonRgn( pt, 3, ALTERNATE); //创建区域  brush.CreateSolidBrush( RGB( 0, 255, 0 ) ); //创建画刷pDC->FillRgn( &rgn, &brush ); break;default:break;}
}