可以对对话框窗口挖洞 int nwidth=480;//洞宽 int nhight=768;//洞高 CRgn rgn2; //洞开在屏中间部份 rgn2.CreateRectRgn((x-nwidth)/2, (y-nhight)/2, (x-nwidth)/2+nwidth, (y-nhight)/2+nhight); CRgn rgn; rgn.CreateRectRgn(0, 0, 1, 1); rgn.CombineRgn(&rgn1, &rgn2, RGN_DIFF);

应网友要求，一个窗口镂空程序。说明 CreateRectRgn(0, 0, cx+A_BIT_MORE, cy+A_BIT_MORE); CombineRgn(&wndRgn;, &rgnTemp;, RGN_DIFF)； SetWindowRgn(wndRgn,FALSE); 等CRgn函数的使用

更多精彩：http://blog.csdn.net/xjm199 pDC->BeginPath(); pDC->Rectangle(50,50,50+sz.cx,50+sz.cy); pDC->EndPath(); pDC->SelectClipPath(RGN_DIFF);

窗口全透明完整代码 Private Declare Function GetWindowRect Lib "user32" (ByVal hWnd As _ Long, lpRECT As RECT) As Long Private Declare Function GetClientRect Lib "user32" (ByVal hWnd As _ Long, lpRECT As RECT) As Long Private Declare Function CombineRgn Lib "