我有几个窗口的WPF应用程序。我想定义GLOBAL inputBindings。
要定义LOCAL输入绑定(bind),我只需在Window.InputBindings或UserControl.InputBindings中声明输入。
为了定义GLOBAL,我希望我可以对Application类做同样的事情。
<Application
....>
<Application.InputBindings>
...
</Application.InputBindings>
如果我在2个不同的窗口中具有相同的绑定(bind),则必须对其进行两次编码。这不符合D.R.Y.的理念,我想还有更好的方法...
编辑:在他的回答Kent Boogaart建议我使用样式。不幸的是,我不知道如何定义它。这是代码:
<Application.Resources>
<Style TargetType="Window">
<Setter Property="InputBindings">
<Setter.Value>
<Window.InputBindings>
<KeyBinding KeyGesture="Ctrl+M" Command="local:App.MsgCommand />
</Window.InputBindings>
</Setter.Value>
</Setter>
</Style>
</Application.Resources>
它将引发错误:错误MC3080:无法设置属性 setter 'InputBindings',因为它没有可访问的设置访问器。
我的风格不对吗?
还有其他解决方案吗?
有任何想法吗?谢谢!
最佳答案
一种解决方案是使用带有Style
的Attached Property在应用程序中给定类型的所有控件上设置InputBindings
。不幸的是,由于您无法制作一个“包罗万象”的Style
(无论如何我都知道),因此您必须为要设置Style
的每种控件类型创建一个InputBindings
(这不应该,但是,控件太多)。下面是一些示例代码,显示了如何执行此操作:
using System.Windows;
using System.Windows.Input;
namespace WpfApplication1
{
public class MyAttached
{
public static readonly DependencyProperty InputBindingsProperty =
DependencyProperty.RegisterAttached("InputBindings", typeof(InputBindingCollection), typeof(MyAttached),
new FrameworkPropertyMetadata(new InputBindingCollection(),
(sender, e) =>
{
var element = sender as UIElement;
if (element == null) return;
element.InputBindings.Clear();
element.InputBindings.AddRange((InputBindingCollection)e.NewValue);
}));
public static InputBindingCollection GetInputBindings(UIElement element)
{
return (InputBindingCollection)element.GetValue(InputBindingsProperty);
}
public static void SetInputBindings(UIElement element, InputBindingCollection inputBindings)
{
element.SetValue(InputBindingsProperty, inputBindings);
}
}
}
<Application x:Class="WpfApplication1.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:loc="clr-namespace:WpfApplication1"
StartupUri="Window1.xaml">
<Application.Resources>
<Style TargetType="TextBox">
<Setter Property="loc:MyAttached.InputBindings">
<Setter.Value>
<InputBindingCollection>
<KeyBinding Key="A" Modifiers="Ctrl" Command="loc:Window1.MyAction" />
</InputBindingCollection>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="Button">
<Setter Property="loc:MyAttached.InputBindings">
<Setter.Value>
<InputBindingCollection>
<KeyBinding Key="A" Modifiers="Ctrl" Command="loc:Window1.MyAction" />
</InputBindingCollection>
</Setter.Value>
</Setter>
</Style>
</Application.Resources>
</Application>
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:loc="clr-namespace:WpfApplication1"
Title="Window1" Height="300" Width="300">
<Window.CommandBindings>
<CommandBinding Command="loc:Window1.MyAction" Executed="MyAction_Executed" />
</Window.CommandBindings>
<StackPanel>
<Button Content="Try Ctrl+A Here!" />
<TextBox Text="Try Ctrl+A Here!" />
</StackPanel>
</Window>
using System.Windows;
using System.Windows.Input;
namespace WpfApplication1
{
public partial class Window1
{
public static readonly RoutedUICommand MyAction = new RoutedUICommand("MyAction", "MyAction", typeof(Window1));
public Window1() { InitializeComponent(); }
private void MyAction_Executed(object sender, ExecutedRoutedEventArgs e) { MessageBox.Show("MyAction!"); }
}
}
关于wpf - XAML-如何具有全局inputBindings?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/1104601/