畫布不獲取指針事件

Question

我無法得到爲什麼我的畫布不能獲取指針事件。下面我的代碼和XAML佈局的一部分：
XAML

<Canvas 
    x:Name="cPad" 
    Canvas.ZIndex="99" 
    Grid.Column="0" 
    PointerPressed="Pad_PointerPressed"> 
    <Rectangle 
     x:Name="rPicker" 
     Width="24" 
     Height="24" 
     Stroke="Black" 
     Fill="White" 
     StrokeThickness="3"/> 
</Canvas> 

C＃

private void Pad_PointerPressed(object sender, PointerRoutedEventArgs e) 
{ 
    cPad.CapturePointer(e.Pointer); 
    var point = e.GetCurrentPoint(cPad).Position; 
    Canvas.SetLeft(rPicker, point.X); 
    Canvas.SetTop(rPicker, point.Y); 
    e.Handled = true; 
} 

，只有rPicker動作，如果我點擊rPicker ...但我需要的問題到Pad_PointerPressed爲畫布上的任何點執行。我怎麼做到的？

Answer 1

套裝Canvas.Background屬性Transparent使PointerPressed事件：

<Canvas 
    ... 
    Background="Transparent" 
    > 

    ... 

</Canvas>