MS Word加载项：右键单击处理程序

Question

我正在开发用于MS Word 2010的加载项，我想将几​​个菜单项添加到右键单击菜单（仅在选择某些文本时）。我看过几个例子来添加项目，但无法找到如何有条件地添加项目。 总之我想重写像OnRightClick处理程序。 在此先感谢。

Answer 1

这很简单，你需要处理WindowBeforeRightClick事件。在活动内部找到所需的命令栏和特定控件，并处理Visible或Enabled属性。

在下面我切换文本命令栏上创建自定义按钮的Visible财产基础上的选择（如果选择包含“C＃”隐藏按钮，否则显示它）的例子

//using Word = Microsoft.Office.Interop.Word; 
    //using Office = Microsoft.Office.Core; 

    Word.Application application; 

    private void ThisAddIn_Startup(object sender, System.EventArgs e) 
    { 
     application = this.Application; 
     application.WindowBeforeRightClick += 
      new Word.ApplicationEvents4_WindowBeforeRightClickEventHandler(application_WindowBeforeRightClick); 

     application.CustomizationContext = application.ActiveDocument; 

     Office.CommandBar commandBar = application.CommandBars["Text"]; 
     Office.CommandBarButton button = (Office.CommandBarButton)commandBar.Controls.Add(
      Office.MsoControlType.msoControlButton); 
     button.accName = "My Custom Button"; 
     button.Caption = "My Custom Button"; 
    } 

    public void application_WindowBeforeRightClick(Word.Selection selection, ref bool Cancel) 
    { 
     if (selection != null && !String.IsNullOrEmpty(selection.Text)) 
     { 
      string selectionText = selection.Text; 

      if (selectionText.Contains("C#")) 
       SetCommandVisibility("My Custom Button", false); 
      else 
       SetCommandVisibility("My Custom Button", true); 
     } 
    } 

    private void SetCommandVisibility(string name, bool visible) 
    { 
     application.CustomizationContext = application.ActiveDocument; 
     Office.CommandBar commandBar = application.CommandBars["Text"]; 
     commandBar.Controls[name].Visible = visible; 
    }