S suwle Unregistered / Unconfirmed GUEST, unregistred user! 2002-02-28 #1 我在一个image1.canvas上,用定时器控件一秒钟画一个秒钟的秒针,当定时器第二秒也 就是第二次触发时,怎么让第一次的图象给擦除掉。谢谢
L lbl20020123 Unregistered / Unconfirmed GUEST, unregistred user! 2002-02-28 #4 var bmp:TBitMap; bmp:=TBitMap.Create; bmp.Canvas.Color:=Image1.Canvas.Color; Image1.Canvas.Draw(bmp);
var bmp:TBitMap; bmp:=TBitMap.Create; bmp.Canvas.Color:=Image1.Canvas.Color; Image1.Canvas.Draw(bmp);
天 天真 Unregistered / Unconfirmed GUEST, unregistred user! 2002-02-28 #6 异或 canvas.pen.Mode:=pmxor; canvas.MoveTo (100,100); canvas.lineto(200,200); 你试两遍就知道效果了