如何清理面板中两点之间的线
[英]how can I clean the line between two points in a panel
问题描述
Hi I have a panel that you can put some points one it and by clicking on a button ,lines will be drawn between points.also there is a button that when you click on it ,all lines will be deleted and points will be on your panel (just lines are deleted) how can I do this. 
嗨，我有一个面板，您可以在其中放置一些点，然后单击按钮，将在各点之间绘制线条。还有一个按钮，当您单击它时，所有线都将被删除并且点将出现在您的面板上面板（仅删除行）我该怎么做。 is there any special method for this? 有什么特殊的方法吗？ thanks 谢谢
I work with netbeans ,AWT 我与netbeans合作，AWT
1 个解决方案
解决方案1
1 已采纳 2010-11-22 17:07:40
Option one: Draw the lines again, only this time in the "background color". 选项一：再次绘制线条，仅这次以“背景色”绘制。 This won't work if your background isn't a solid color. 如果您的背景不是纯色，则此方法将无效。
Option two: Redraw Everything, without the lines. 选项二：重画所有内容，无线条。 Not very efficient, but it really your only option if you have a complex background (text, images, etc). 效率不是很高，但是如果您有复杂的背景（文本，图像等），这实际上是您唯一的选择。
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