Word Document.SelectionChange事件不会触发

Question

以下是基于VSTO的Word插件的代码(可读性简化版).

问题是,如果我打开了两个文档,例如文档和模板,我的插件有助于开发模板并正常工作,直到模板关闭并在同一个Word实例中重新打开(文档文件使Word保持活动状态).一旦发生这种情况,即使附加了侦听器(使用调试器确认),也不会收到SelectionChange事件.

这段代码有什么问题吗？附加选择更改事件的任何其他方式？

void Application_DocumentOpen(Word.Document Doc)
{
   // this method gets called as intended
   Document vstoDoc = Globals.Factory.GetVstoObject(doc);
   vstoDoc.SelectionChange += new Microsoft.Office.Tools.Word.SelectionEventHandler(ThisDocument_SelectionChange);
}

private void Application_DocumentBeforeClose(Word.Document doc, ref bool Cancel)
{
   // this one also gets called as intended
    Document vstoDoc = Globals.Factory.GetVstoObject(doc);
    vstoDoc.SelectionChange -= new Microsoft.Office.Tools.Word.SelectionEventHandler(ThisDocument_SelectionChange);

}

void ThisDocument_SelectionChange(object sender, SelectionEventArgs e)
{  
    // this doesn't get called if the document is closed and open again within the same Word instance
    Log("Selection changed");
}    

更新:这似乎是VSTO的错误.

附加到其他事件工作正常,我可以使用ContentControlOnEnter/Exit:

vstoDoc.SelectionChange += ThisDocument_SelectionChange; // doesn't work
vstoDoc.ContentControlOnEnter += vstoDoc_ContentControlOnEnter; // works
vstoDoc.ContentControlOnExit += vstoDoc_ContentControlOnExit;   // works

Answer 1

为什么不用

Globals.ThisAddIn.Application.WindowSelectionChange +=
                new ApplicationEvents4_WindowSelectionChangeEventHandler(Application_WindowSelectionChange);

而不是将您的Microsoft.Office.Interop.Word.Document对象转换为Microsoft.Office.Tools.Word.Document