通过

NavigationCommands.Zoom 属性

  • 参考

定义

命名空间:
System.Windows.Input
程序集:
PresentationCore.dll

获取表示 Zoom 命令的值。

public:
 static property System::Windows::Input::RoutedUICommand ^ Zoom { System::Windows::Input::RoutedUICommand ^ get(); };
public static System.Windows.Input.RoutedUICommand Zoom { get; }
static member Zoom : System.Windows.Input.RoutedUICommand
Public Shared ReadOnly Property Zoom As RoutedUICommand

属性值

RoutedUICommand

路由的 UI 命令。

默认值
键笔势 不可用
UI 文本 Zoom

示例

以下示例演示如何实现与 一起FlowDocumentPageViewer响应 Zoom 命令的代码。

<Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="SDKSample.Zoom">

<FlowDocumentPageViewer Name="flowDocumentPageViewer" MinZoom="50" MaxZoom="200">

  <!-- Zoom Context Menu-->
  <FlowDocumentPageViewer.ContextMenu>
    <ContextMenu>
      <ContextMenu.CommandBindings>
        <CommandBinding
          Command="NavigationCommands.Zoom"
          CanExecute="navigationCommandZoom_CanExecute"
          Executed="navigationCommandZoom_Executed" />
      </ContextMenu.CommandBindings>
      <MenuItem Header="50%" Command="NavigationCommands.Zoom" CommandParameter="50" />
      <MenuItem Header="100%" Command="NavigationCommands.Zoom" CommandParameter="100" />
      <MenuItem Header="150%" Command="NavigationCommands.Zoom" CommandParameter="150" />
      <MenuItem Header="200%" Command="NavigationCommands.Zoom" CommandParameter="200" />
    </ContextMenu>
  </FlowDocumentPageViewer.ContextMenu>

  <FlowDocument>
    <!-- Document Content-->
    <Paragraph>
      Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Sed vulputate, lacus non sagittis pharetra, diam dolor dictum tellus, et hendrerit odio risus nec erat. Nam sollicitudin imperdiet mi. Sed rutrum. Morbi vel nunc. Donec imperdiet. Morbi hendrerit leo. Maecenas imperdiet. Curabitur viverra tempor nisi. Phasellus vitae augue sit amet neque venenatis elementum. Proin posuere lobortis quam. Curabitur et neque. Donec ac sem vitae libero pharetra luctus. Fusce purus. Nulla vehicula, leo commodo dictum lobortis, odio augue accumsan ante, id dictum nisi libero quis diam. Nam augue erat, malesuada eu, tincidunt eu, dictum ut, ante. In vel magna vel ligula faucibus lobortis. Praesent a felis non mi fringilla vulputate. Integer quis tellus cursus elit tincidunt vehicula. Morbi commodo sem eu eros. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae;
    </Paragraph>

  </FlowDocument>
</FlowDocumentPageViewer>

</Window>

注解

此命令指示设置缩放级别的意图。

在任何给定的 WPF 类上，都没有用于响应 Zoom 命令的实现。 因此，需要提供适当的实现，如示例中所示。

XAML 属性用法

<object property="NavigationCommands.Zoom"/>

适用于

另请参阅