T
tianguozhi
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请教各位：在Canvas中画完图后，如何清除？谢谢！急！急！急！在线等...
T
tianguozhi
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请教各位：在Canvas中画完图后，如何清除？谢谢！急！急！急！在线等...
J
jonnylve
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使用canvas.floodfill 可以使起到清除画布的作用
具体用法可以参看 delphi 的帮助
具体用法可以参看 delphi 的帮助
H
huaervvhuaer
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Canvas.FillRect(Rect(0,0,aWidth,aHeight));
L
lmeagle01
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如果有对该矩形记录的话，当然是使用pen.mode
否则的话，直接fillrect把画布清空
不过记住每次对于pen,brush的改变都要恢复，免得麻烦
Canvas.FillRect(Canvas.ClipRect)
否则的话，直接fillrect把画布清空
不过记住每次对于pen,brush的改变都要恢复，免得麻烦
Canvas.FillRect(Canvas.ClipRect)
L
lmeagle01
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当然了这样也是可以的
Image.Picture := NIL
Image.Picture := NIL
T
tianguozhi
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各位大虾，以上几种方法好像都不行啊？
C
cst_zf
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Fills the specified rectangle on the canvas using the current brush.
Delphi syntax:
procedure FillRect(const Rect: TRect);
C++ syntax:
void __fastcall FillRect(const TRect &Rect);
Description
Use FillRect to fill a rectangular region using the current brush. The region is filled including the top and left sides of the rectangle, but excluding the bottom and right edges.
Delphi syntax:
procedure FillRect(const Rect: TRect);
C++ syntax:
void __fastcall FillRect(const TRect &Rect);
Description
Use FillRect to fill a rectangular region using the current brush. The region is filled including the top and left sides of the rectangle, but excluding the bottom and right edges.
D
DarkWorm
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记住原来的控件的颜色，当你想清除绘画的内容后用原来的颜色重新绘一次就可以了。[
]不用谢了
]不用谢了
A
antong
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楼上幽默[][]
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