Question

我对WPF有一个非常奇怪的问题。

一个带有快捷键（“_Ok”）按钮和web浏览器控件的简单窗口。问题是：当我按下“o”时光标位于webbrowser内的textarea中时，当我按下Alt + O时，wpf会触发按钮点击

这是Windows1.xaml的XAML：

<Window x:Class="testBrowser.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <Grid>
    <Grid.ColumnDefinitions>
      <ColumnDefinition Width="*" />
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
      <RowDefinition Height="*" />
      <RowDefinition Height="Auto" />
      <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>

    <WebBrowser Name="m_Browser" Focusable="False" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" 
                Margin="0"/>

    <TextBox Name="m_Text" Grid.Row="1" />
    <Button Name="m_Ok" Content="_Ok" Click="m_Ok_Click" Grid.Row="2" />
  </Grid>
</Window>

后面的代码（只是设置浏览器内容）：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace testBrowser
{
  /// <summary>
  /// Interaction logic for Window1.xaml
  /// </summary>
  public partial class Window1 : Window
  {
    public Window1()
    {
      InitializeComponent();

      m_Browser.NavigateToString("<textarea cols=\"20\" rows=\"10\"/>");
    }

    private void m_Ok_Click(object sender, RoutedEventArgs e)
    {
      MessageBox.Show("Ok pressed");
    }
  }
}

编辑：修正了使用此代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace testBrowser
{
  /// <summary>
  /// Interaction logic for Window1.xaml
  /// </summary>
  public partial class Window1 : Window
  {
    public Window1()
    {
      InitializeComponent();

      EventManager.RegisterClassHandler(typeof(UIElement), AccessKeyManager.AccessKeyPressedEvent, 
                                        new AccessKeyPressedEventHandler(OnAccessKeyPressed));

      m_Browser.NavigateToString("<textarea cols=\"20\" rows=\"10\"/>");
    }

    private void m_Ok_Click(object sender, RoutedEventArgs e)
    {
      MessageBox.Show("Ok pressed");
    }

    private static void OnAccessKeyPressed(object sender, AccessKeyPressedEventArgs e)
    {    
      if ((Keyboard.Modifiers & ModifierKeys.Alt) != ModifierKeys.Alt) {
        e.Target = null;
        e.Handled = true;
      }
    }
  }
}

Answer 1

根据以下链接：AccessKey Pressed Event Raised when pressing access key without ALT助记符在WPF中工作，无需按Alt键。

线程中有关于在.net 4.0中更改此内容的说法，但这是我测试它所以它似乎没有。

该主题描述了一种可能对您有用的方法。

按下ALT +键时，WPF WebBrowser触发按钮快捷键

1 个答案: