本文介绍了WPF:画布鼠标事件不在空白空间上触发的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我已经在 Canvas
上设置了鼠标事件,如下所示:
I have set mouse events on a Canvas
as follows:
<Canvas MouseUp="CanvasUp" MouseDown="CanvasDown" MouseMove="CanvasMove">
...
</Canvas>
但是这些仅在诸如 Image $ c之类的子元素上有效$ c>和
Rectangle
,而不是在空白处。
我该如何解决?
But these are active only on the child elements like Image
and Rectangle
, not on the empty space.How can I solve this?
推荐答案
没有背景颜色设置(明确或通过样式等)的控件将
A control with no background color set (explicitly or through styles etc) will default to having a background color of null - making it not hit-testable.
如果将背景设置为透明(或除null(<$ c之外的任何其他值),则默认为背景色-使其不可命中测试。 $ c> {x:Null} )),它将能够拾取鼠标事件
If you set the background to "Transparent" (or anything other than null ({x:Null}
)) then it will be able to pick up the mouse events
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