2011-05-31 80 views
2

我在Windows中有一个键盘焦点问题窗体应用程序承载WPF用户控件。当我按Tab键时,如果UserControl中只有WPF控件,导航工作正常。如果我将WindowsFormsHost托管控件添加到此WPF UserControl,则焦点不会从WPF UserControl中的WindowsFormsHosted控件移开。键盘焦点导航问题托管WPF查看与WindowsFormsHost主办控制

当应用程序是WPF应用程序,重点导航完美的作品,但是当我添加此WPF用户控件到Windows窗体应用程序,按下TAB键不起作用了。

这将是巨大的,得到一些帮助与此有关。

这里是我的代码:

public partial class Form1 : Form 
{ 
    public Form1() 
    { 
     InitializeComponent(); 

     ElementHost host = new ElementHost(); 
     host.Dock = DockStyle.Fill; 
     host.Child = new SomeControls(); 
     this.Controls.Add(host); 
    } 
} 

/// <summary> 
/// Interaction logic for SomeControls.xaml 
/// </summary> 
public partial class SomeControls : UserControl 
{ 
    public SomeControls() 
    { 
     InitializeComponent(); 
    } 
} 

<UserControl x:Class="TabAndHostTest.SomeControls" 
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
     xmlns:forms="clr-namespace:System.Windows.Forms;assembly=System.Windows.Forms" 
     xmlns:my="clr-namespace:TabAndHostTest" Width="450"> 
<Grid> 
    <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="124*" /> 
     <ColumnDefinition Width="388*" /> 
    </Grid.ColumnDefinitions> 
    <Grid.RowDefinitions> 
     <RowDefinition Height="Auto" /> 
     <RowDefinition Height="Auto" /> 
     <RowDefinition Height="Auto" /> 
     <RowDefinition Height="Auto" /> 
     <RowDefinition Height="Auto" /> 
    </Grid.RowDefinitions> 

    <Label Grid.Row="0" Grid.Column="0" Content="value1" Height="28" HorizontalAlignment="Left" Name="value1" VerticalAlignment="Top" /> 
    <TextBox Grid.Row="0" Grid.Column="1" Height="23" HorizontalAlignment="Left" Name="textBox1" VerticalAlignment="Top" Width="257" /> 

    <Label Grid.Row="1" Content="value2" Height="28" HorizontalAlignment="Left" Name="value2" VerticalAlignment="Top" /> 
    <TextBox Grid.Row="1" Grid.Column="1" Height="23" HorizontalAlignment="Left" Name="textBox2" VerticalAlignment="Top" Width="257" /> 

    <Label Grid.Row="2" Grid.Column="0" Content="hostedvalue1" Height="28" HorizontalAlignment="Left" Name="hostedvalue1" VerticalAlignment="Top" /> 
    <WindowsFormsHost Grid.Column="1" Grid.Row="2" Height="23" HorizontalAlignment="Left" Name="windowsFormsHost1" VerticalAlignment="Top" Width="307"> 
     <forms:TextBox x:Name="formsTextbox1" Height="23" Width="150" /> 
    </WindowsFormsHost> 

    <Label Grid.Row="3" Grid.Column="0" Content="hostedvalue2" Height="28" HorizontalAlignment="Left" Name="hostedvalue2" VerticalAlignment="Top" /> 
    <WindowsFormsHost Grid.Column="1" Grid.Row="3" Height="23" HorizontalAlignment="Left" Name="windowsFormsHost2" VerticalAlignment="Top" Width="307"> 
     <forms:TextBox x:Name="formsupdown1" Height="23" Width="150" /> 
    </WindowsFormsHost> 
</Grid> 

回答

3

这是一个有点棘手。本质上,托管的winform借用了焦点,但没有返回它。

一看,虽然这篇文章可能会有所帮助:Gotchas For Working With Windows Forms/WPF Interop

聚焦原理不同WPF和 Windows窗体,并有一些 粗糙的边缘在这里,我们是 无法修复。

根据MSDN

键盘互操作依赖于 实施OnNoMoreTabStops 方法来处理TAB键和箭头键 输入端,将焦点移动了托管 元件

This SO question是一个寻找解决方法的好地方。

+0

谢谢您的回答。这里有很好的链接。其中一些链接我已经检查过,但我无法弄清楚为什么在应用程序是WPF应用程序时,焦点不会从托管文本框中传出。 http://www.codeproject.com/KB/WPF/EnhancedFocusScope.aspx: – Trainee 2011-05-31 09:43:30

+0

从任何提示? – 2011-05-31 12:00:29