3
每當我嘗試以編程方式移動焦點時,焦點視覺(虛線矩形)不會顯示。當以編程方式導航焦點時,焦點視覺不會顯示
可以做些什麼來強制這個視覺顯示?
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" Loaded="OnLoaded">
<StackPanel>
<TextBlock x:Name="a" Focusable="True">A</TextBlock>
<TextBlock Focusable="True">B</TextBlock>
<Button Focusable="False" Click="OnClick">Move Focus</Button>
</StackPanel>
</Window>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void OnLoaded(object sender, RoutedEventArgs e)
{
Keyboard.Focus(a);
}
private void OnClick(object sender, RoutedEventArgs e)
{
var request = new TraversalRequest(FocusNavigationDirection.Next);
var elementWithFocus = Keyboard.FocusedElement as UIElement;
if (elementWithFocus != null)
elementWithFocus.MoveFocus(request);
}
}