鼠标事件未到达 UIElement
我有一个由 System.Windows.Controls.Canvas 对象组成的 6x8 网格。左上角画布不接收鼠标事件，而其他画布则接收鼠标事件。我尝试了 OnMouseMove 和 OnMouseClick 事件。
子对象未处理该事件，因为 System.Windows.Media.VisualTreeHelper#GetChildrenCount() 不显示任何子对象。我也无法捕捉到 PreviewOnMouseMove 。我的画布前面是否可以有一些（可能是透明的）控件优先？
I have a 6x8 grid of System.Windows.Controls.Canvas objects. The top left canvas does not receive mouse events while all the others do. I tried OnMouseMove and OnMouseClick events.
A child object isn't handling the event because System.Windows.Media.VisualTreeHelper#GetChildrenCount() doesn't show any children. I couldn't catch PreviewOnMouseMove either. Can there be some (perhaps transparent) control in front of my canvas that is taking precedence?
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终于找到解决办法了。每个
Canvas都有Adorner。根据 这篇 MSDN 文章，装饰器在底层 UI 元素之前接收鼠标事件做。我将所有装饰器的IsHitTestVisible属性设置为false。Finally found a solution. Each of the
Canvases haveAdorners. According to this MSDN article, adorners receive mouse events before the underlying UI element does. I set theIsHitTestVisibleproperty of all my adorners tofalse.我希望这对您有帮助，只需将
Canvas的Background属性设置为Transparent值即可：祝你好运！
I hope this helps you, Just set
Transparentvalue to theBackgroundproperty for theCanvas:Good luck!