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Paint;
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procedure Paint; virtual;
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procedure TGraphicControl.Paint;
begin
end;
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procedure WMPaint(var Message: TWMPaint); message WM_PAINT;
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procedure TGraphicControl.WMPaint(var Message: TWMPaint);
begin
if Message.DC <> 0 then
begin
Canvas.Lock;
try
Canvas.Handle := Message.DC;
try
Paint; //µ÷ÓÃÁËÕâ¸öº¯ÊýÀ´»Í¼Ðοؼþ
finally
Canvas.Handle := 0;
end;
finally
Canvas.Unlock;
end;
end;
end;
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var
o : Olevariant;
begin
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