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为什么得不到desktop的更新区域呢?还是desktop是整屏更新的吗?谢谢大家了<br>var<br> r: TRect;<br> msg:tagmsg;<br>begin<br> getmessage(msg,hwnd_desktop,wm_paint,wm_paint);<br> GetUpdateRect(hwnd_desktop, r, true);<br> Caption := '(' + inttostr(r.Left) + ', ' + inttostr(r.Top) + ') - (' +<br> inttostr(r.Right) + ', ' + inttostr(r.Bottom) + ')';<br>end;<br>