您当前的位置: 当Canvas的父元素是ScrollViewer时调用FindElementsInHostCoordinates函数始终无法获得被命中的元素,有什么解决办法？
详细见：http://kimiya25.spaces.live.com/blog/cns!27A083D4FD9435E9!2008.entry
------解决方案--------------------
这个问题的关建是ScrollView 需要通过scrollViewer.AddHandler(UIElement.MouseLeftButtonDownEvent, new MouseButtonEventHandler(Control_MouseDown), true);注册鼠标事件参考:
- XML code
<UserControl x:Class="LoadSilverlight.scrollViewMouseHitTest"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="400" Height="300">
<Grid x:Name="LayoutRoot">
<Border x:Name="bdRootLayout">
<ScrollViewer x:Name="scrollViewer" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" Background="Yellow">
<Canvas x:Name="canvas" Background="#50FFFFFF">
<Rectangle Width="50" Height="50" Fill="Black" Stroke="Green" Canvas.Left="5" Canvas.Top="5" />
<Rectangle Width="50" Height="50" Fill="Black" Stroke="Green" Canvas.Left="55" Canvas.Top="5" />
<Rectangle Width="50" Height="50" Fill="Black" Stroke="Green" Canvas.Left="5" Canvas.Top="55" />
<Rectangle Width="50" Height="50" Fill="Black" Stroke="Green" Canvas.Left="55" Canvas.Top="55" />
</Canvas>
</ScrollViewer>
</Border>
</Grid>
</UserControl>