silverlight - 为什么在全屏模式下我没有收到键盘输入事件？

Question

我在 Silverlight 全屏模式下遇到了一些问题。

如果我将应用程序切换到全屏，则不会处理来自键盘的所有输入。没有文本框输入，没有按键按下/按键按下事件，可能还有更多。这是一个示例应用程序，演示了这一点:

Xaml:

<Canvas>

<TextBlock Text="Try some input:" Canvas.Top="10" Width="100"></TextBlock>

<TextBox x:Name="tboxInput" Width="100" Canvas.Top="30"></TextBox>

<Button x:Name="btnFullScreen" Content="Go Full Screen" Canvas.Top="60"></Button>

</Canvas>

隐藏代码:

public Page() 
{

InitializeComponent();

btnFullScreen.Click += new RoutedEventHandler(btnFullScreen_Click); 
}

void btnFullScreen_Click(object sender, RoutedEventArgs e) 
{

Application.Current.Host.Content.IsFullScreen = !Application.Current.Host.Content.IsFullScreen; 
if (!Application.Current.Host.Content.IsFullScreen)

btnFullScreen.Content = "Go Full Screen"; 
else

btnFullScreen.Content = "Go Normal Screen"; 
}

很容易看出，在全屏模式下，您无法在文本框中写入文本。我在这里做错了吗？有没有另一种方法可以切换全屏，这样就不会发生这种情况？

Answer 1

此链接应该可以帮助您:http://silverlight.net/forums/p/11519/36798.aspx
编辑
还有这个 MSDN article给你一个更详细的原因:

When a Silverlight plug-in is in full-screen mode, it disables most keyboard events. This limitation of keyboard input during full-screen mode is a security feature, and is intended to minimize the possibility of unintended information being entered by a user. In full-screen mode, the only input allowed is through the following keys.

UP ARROW, DOWN ARROW, LEFT ARROW, RIGHT ARROW, SPACEBAR, TAB, PAGE UP, PAGE DOWN, HOME, END, ENTER