发信人: lightsabre() 
整理人: wenbobo(2002-07-10 16:43:27), 站内信件
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如何使图形只能画在指定的区域内
  For a SDI with normal CView:
  void CClipTestView::OnDraw(CDC* pDC) {         CClipTestDoc* pDoc = GetDocument();         ASSERT_VALID(pDoc);                   CRect rect, rcClip;
          GetClientRect(&rect);                  int nWidth = rect.Width();         int nHeight = rect.Height();
          rcClip = CRect(rect.left+nWidth/4,rect.top+nHeight/4,rect.right-nWidt h/4,rect.bottom-nHeight/4);
          CRgn rgn;
          rgn.CreateRectRgnIndirect(&rcClip);
          //comment out the following line to see the whole drawing         pDC->SelectClipRgn(&rgn);
          pDC->MoveTo(rect.left,rect.top);         pDC->LineTo(rect.right,rect.bottom);
          pDC->MoveTo(rect.right,rect.top);         pDC->LineTo(rect.left,rect.bottom);
  }
  -- May The Force Be With You
  ※ 来源:.月光软件站 http://www.moon-soft.com.[FROM: 4.54.50.211]
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