c# - MS Word 加载项：右键单击处理程序

Question

我正在为MS Word 2010开发一个加载项，我想在右键单击菜单中添加几个菜单项（仅在选择某些文本时）。我已经看到了几个添加项目的示例，但找不到如何有条件地添加项目。简而言之，我想覆盖类似 OnRightClick 处理程序的东西。提前致谢。

Answer 1

这很简单，您需要处理WindowBeforeRightClick事件。在事件内部找到所需的命令栏和特定控件并处理Visible或Enabled属性。

在下面的示例中，我Visible根据选择切换在文本命令栏上创建的自定义按钮的属性（如果选择包含“C#”，则隐藏按钮，否则显示它）

    //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;
    }