Question

除了已有的弹出项目外，是否可以将菜单弹出按钮添加到UWP中的RichEditBox。但我发现richeditbox中没有弹出属性。那么可以添加一个吗？如果是，请提供添加menuFlyout的步骤。提前谢谢！

Answer 1

当然可能。

 <RichEditBox GotFocus="RichEditBox_GotFocus">
                    <FlyoutBase.AttachedFlyout>
                        <Flyout>
                            <Button Content="test"/>
                        </Flyout>
                    </FlyoutBase.AttachedFlyout>
                </RichEditBox>

 private void RichEditBox_GotFocus(object sender, RoutedEventArgs e)
        {
            FlyoutBase.ShowAttachedFlyout((sender as RichEditBox));
        }

<强>更新

我尝试在没有自定义弹出窗口的情况下实现您的要求。

<强>观察

1 RightTapped事件不会触发Textbox。不知道为什么。那里在ScrollViewer的{{1}}中ControlTemplate（可能就是这样） RightTapped事件未在文本框中触发的原因）所以我补充说 Scrollviewer的RightTapped事件。

2

TextBox

在上面的代码private async void ContentElement_RightTapped(object sender, RightTappedRoutedEventArgs e) { FlyoutBase.ShowAttachedFlyout(textbox); await Task.Delay(1000); FlyoutPresenter canvas = testbutton.FindParent<FlyoutPresenter>(); var popup = canvas.Parent as Popup; double x = e.GetPosition(e.OriginalSource as UIElement).X; Debug.WriteLine(x); popup.IsOpen = false; popup.SetValue(Canvas.LeftProperty, e.GetPosition(e.OriginalSource as UIElement).X); popup.IsOpen = true; } <Style x:Key="RichEditBoxStyle1" TargetType="RichEditBox"> ... <ScrollViewer x:Name="ContentElement" IsRightTapEnabled="True" RightTapped="ContentElement_RightTapped" AutomationProperties.AccessibilityView="Raw" HorizontalScrollMode="{TemplateBinding ScrollViewer.HorizontalScrollMode}" HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}" IsTabStop="False" IsHorizontalRailEnabled="{TemplateBinding ScrollViewer.IsHorizontalRailEnabled}" IsVerticalRailEnabled="{TemplateBinding ScrollViewer.IsVerticalRailEnabled}" IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}" Margin="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" Grid.Row="1" VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" VerticalScrollMode="{TemplateBinding ScrollViewer.VerticalScrollMode}" ZoomMode="Disabled"/> ... </Style> <RichEditBox x:Name="textbox" Width="400" HorizontalAlignment="Left" Grid.Row="3" RightTapped="RichEditBox_RightTapped" IsRightTapEnabled="True" GotFocus="RichEditBox_GotFocus" Style="{StaticResource RichEditBoxStyle1}"> <FlyoutBase.AttachedFlyout> <Flyout > <Button Content="test" x:Name="testbutton" Click="Button_Click"/> </Flyout> </FlyoutBase.AttachedFlyout> </RichEditBox>中是ScrollViewer的RightTapped事件。添加此项您必须编辑TextBox样式。我正在使用VisualTreeHelper基本上是flyout conatins弹出窗口。并设置PopUp的位置（我从事件中获得）。但不知何故，PopUp还没有确定到正确的位置。

所以第二个选择是去自定义弹出窗口。请参阅此Link了解如何实施一个。你可以从那里获取代码这是修改后的代码

ContentElement_RightTapped

更新2

您无法添加到TextBox的现有Contextmenu中。要在此处修改上下文菜单，请sample

将MenuFlyout添加到RichEditBox UWP

1 个答案: