RichEditBox

Question

我正在为 UWP 使用 RichEditBox，并且有一个场景，我试图捕获 'delete' 按键事件。退格键和其他键工作正常，这是特定于删除的。出于某种原因，我无法捕获 'delete' 按键事件，但听按键工作正常。

RichEditBox 在 'delete' 上是否有一些值得它吞噬事件的行为？有什么想法吗？

<RichEditBox x:Name="Content"
             AcceptsReturn="False"
             KeyDown="Content_KeyDown"
             KeyUp="Content_KeyUp"
             SelectionChanged="Content_SelectionChanged"
             FontSize="18"
             Style="{StaticResource TitleEditBoxStyle}"/>

private void Content_KeyDown(object sender, KeyRoutedEventArgs e)
{
    // no breakpoint hit, cannot capture delete
    switch (e.Key)
    {
        case Windows.System.VirtualKey.Delete:
        {
            ...
            break;
        }
}
...
private void Content_KeyUp(object sender, KeyRoutedEventArgs e)
{
    // breakpoint hit, key is correct
}

Answer 1

改用 PreviewKeyDown & PreviewKeyUp。

RichEditBox - KeyDown 不捕获 'delete' 键，但 keyup 可以

RichEditBox - KeyDown doesn't capture 'delete' key, but keyup does

c#

uwp