将菜单项添加到FlowDocumentReader ContextMenu

时间:2011-02-11 03:50:50

标签: wpf contextmenu flowdocumentreader

FlowDocumentReader在其ContextMenu,Copy和Select All中有两个菜单项。我想为它添加一个额外的MenuItem并尝试过:

    private void FlowDocumentReader_ContextMenuOpening(object sender, ContextMenuEventArgs e)
    {
        flowDocumentReader.ContextMenu.Items.Clear();
        MenuItem menuItem = new MenuItem();
        menuItem.Header = "Test";
        flowDocumentReader.ContextMenu.Items.Add(menuItem);
    }

另外我试过这个:

    private void FlowDocumentReader_ContextMenuOpening(object sender, ContextMenuEventArgs e)
    {
        MenuItem menuItem = new MenuItem();
        menuItem.Header = "Test";
        flowDocumentReader.ContextMenu.Items.Add(menuItem);
    }

我不清除上下文菜单中的项目并尝试附加它。这些都不起作用。

我可以像这样创建自己的菜单:

    private void FlowDocumentReader_ContextMenuOpening(object sender, ContextMenuEventArgs e)
    {
        MenuItem menuItem = new MenuItem();
        menuItem.Header = "Test";
        flowDocumentReader.ContextMenu.Items.Add(menuItem);
        e.Handled = true;
        ContextMenu menu = new ContextMenu();
        MenuItem a = new MenuItem();
        a.Header = "A";
        menu.Items.Add(a);
        MenuItem b = new MenuItem();
        b.Header = "B";
        menu.Items.Add(b);
        flowDocumentReader.ContextMenu.Items.Clear();
        flowDocumentReader.ContextMenu = menu;
        menu.IsOpen = true;
    }

然后会出现,但我想要的是复制和全选菜单项以及A和B.

想法?

2 个答案:

答案 0 :(得分:6)

您也可以在xaml中为 FlowDocument 执行此操作:

<FlowDocument.ContextMenu>
     <ContextMenu>
          <MenuItem Header="{Resx Copy}" Command="Copy"/>
          <MenuItem Header="{Resx SelectAll}" Command="SelectAll"/>
          <MenuItem Header="{Resx CustomCommand}" Command="{Binding CustomCommand}"/>
     </ContextMenu>
</FlowDocument.ContextMenu>

(由于格兰特弗里斯肯的Resx Extension而方便地定位了标题):)

如果需要将其应用于许多FlowDocuments,您还可以在某处以默认样式定义它:

<Style TargetType="FlowDocument">
    <Setter Property="ContextMenu">
         <Setter.Value>
              <ContextMenu>
                  <MenuItem Header="{Resx Copy}" Command="Copy"/>
                  <MenuItem Header="{Resx SelectAll}" Command="SelectAll"/>
                  <MenuItem Header="{Resx CustomCommand}" Command="{Binding CustomCommand}"/>
              </ContextMenu>
         </Setter.Value>
    </Setter>
</Style>

答案 1 :(得分:0)

我得到的解决方案是简单地在新菜单上重新创建那些MenuItem并取消通常显示的内置ContextMenu的显示。有许多内置的ApplicationCommands可以合并到您自己的自定义ContextMenu中,并且实现起来非常简单。

假设我有一个从某个方法GetContextMenu()创建的ContextMenu,以下事件处理程序拒绝打开内置ContextMenu并将从调用返回的一个替换为GetContextMenu()并添加Copy命令(选择全部类似)。

private void flowDocumentReader_ContextMenuOpening(object sender, ContextMenuEventArgs e)
{
   e.Handled = true;  // keeps the built-in one from opening
   ContextMenu myMenu = GetContextMenu();
   MenuItem copyMenuItem = new MenuItem();
   copyMenuItem.Command = ApplicationCommand.Copy;
   copyMenuItem.CommandTarget = myFlowDocument;
   myMenu.Items.Add(copyMenuItem);
   ShowMenu(myMenu);
}

private void ShowMenu(ContextMenu menu)
{
   menu.Placement = PlacementMode.MousePoint;
   menu.PlacementRectangle = new Rect(0.0, 0.0, 0.0, 0.0);
   menu.IsOpen = true;
}