我正在构建一个 Outlook 插件,我想对电子邮件正文中的文本选择更改使用react。
为此,我将 WindowSelectionChange 事件
附加到邮件项目检查器内的 Word 对象。
if (inspector.IsWordMail())
{
wordDoc = inspector.WordEditor as Word.Document;
wordDoc.Application.WindowSelectionChange += new Microsoft.Office.Interop.Word.ApplicationEvents4_WindowSelectionChangeEventHandler(text_selected);
}
这在一段时间内工作正常,但随后事件停止触发选择,似乎是随机的。我一整天都在处理这个问题,但无法解决这个问题。
环顾四周后,我发现 wordDoc 对象可能正在被垃圾收集,因此我确保将其设置为类变量。
无论如何,也许如果没有整个项目,就很难查明问题的确切原因...我的问题更多的是,我将如何调试这个问题?如果事件没有被触发,我就没有什么可以断点的。如果事件监听器不是 wordDoc 应用程序中的属性,我如何监视它们的状态?
这是相关类的大部分代码,其中删除了一些代码。我对造成的困惑表示歉意 - 我正在学习这个......
public class InspectorWrapper
{
private Outlook.Inspector inspector;
private CustomTaskPane taskPane;
private Dictionary<string, List<ScanResult>> mailItemEntities;
private bool activated, loaded;
private Word.Document wordDoc;
public InspectorWrapper(Outlook.Inspector Inspector)
{
inspector = Inspector;
loaded = false;
activated = false;
((Outlook.InspectorEvents_Event)inspector).Close +=
new Outlook.InspectorEvents_CloseEventHandler(InspectorWrapper_Close);
taskPane = Globals.ThisAddIn.CustomTaskPanes.Add(
new TaskPaneControl(), "Addin", inspector);
taskPane.VisibleChanged += new EventHandler(TaskPane_VisibleChanged);
mailItemEntities = new Dictionary<string, List<ScanResult>>();
((Outlook.InspectorEvents_10_Event)inspector).Activate += new Outlook.InspectorEvents_10_ActivateEventHandler(ThisAddIn_Activate);
}
void ThisAddIn_Activate()
{
activated = true;
}
void text_selected(Word.Selection selected_text)
{
if (activated && loaded)
{
((TaskPaneControl)this.CustomTaskPane.Control).text_selected(selected_text.Text, selected_text.End - selected_text.Start);
}
}
void TaskPane_VisibleChanged(object sender, EventArgs e)
{
Globals.Ribbons[inspector].Ribbon1.toggleButton1.Checked = taskPane.Visible;
if (!loaded) {
process_email(this.inspector.CurrentItem as Outlook.MailItem);
if (inspector.IsWordMail())
{
wordDoc = inspector.WordEditor as Word.Document;
wordDoc.Application.WindowSelectionChange += new Microsoft.Office.Interop.Word.ApplicationEvents4_WindowSelectionChangeEventHandler(text_selected);
}
loaded = true;
}
}
void InspectorWrapper_Close()
{
if (taskPane != null)
{
Globals.ThisAddIn.CustomTaskPanes.Remove(taskPane);
}
activated = false;
loaded = false;
taskPane = null;
Globals.ThisAddIn.InspectorWrappers.Remove(inspector);
((Outlook.InspectorEvents_Event)inspector).Close -=
new Outlook.InspectorEvents_CloseEventHandler(InspectorWrapper_Close);
((Outlook.InspectorEvents_10_Event)inspector).Activate -=
new Outlook.InspectorEvents_10_ActivateEventHandler(ThisAddIn_Activate);
inspector = null;
}
}
这是我的主要 Addin 类,以防万一:
public partial class ThisAddIn
{
Outlook.Inspectors inspectors;
Outlook.MailItem mailItem;
private string last_id = "";
private Dictionary<Outlook.Inspector, InspectorWrapper> inspectorWrappersValue =
new Dictionary<Outlook.Inspector, InspectorWrapper>();
private Outlook.Inspector ins;
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
inspectors = this.Application.Inspectors;
inspectors.NewInspector += new Outlook.InspectorsEvents_NewInspectorEventHandler(Inspectors_NewInspector);
}
void Inspectors_NewInspector(Microsoft.Office.Interop.Outlook.Inspector Inspector)
{
ins = Inspector;
Outlook.MailItem mailItem = ins.CurrentItem as Outlook.MailItem;
if (mailItem != null)
{
inspectorWrappersValue.Add(ins, new InspectorWrapper(ins));
}
}
private void ThisAddIn_Shutdown(object sender, System.EventArgs e)
{
// Note: Outlook no longer raises this event. If you have code that
// must run when Outlook shuts down, see http://go.microsoft.com/fwlink/?LinkId=506785
inspectors.NewInspector -=
new Outlook.InspectorsEvents_NewInspectorEventHandler(
Inspectors_NewInspector);
inspectors = null;
inspectorWrappersValue = null;
}
public Dictionary<Outlook.Inspector, InspectorWrapper> InspectorWrappers
{
get
{
return inspectorWrappersValue;
}
}
#region VSTO generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InternalStartup()
{
this.Startup += new System.EventHandler(ThisAddIn_Startup);
this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown);
}
#endregion
}
最佳答案
引发事件并被垃圾收集的不是 wordDoc 变量。它是从 wordDoc.Application 返回的 Application 对象:
private Word.Application wordApp;
...
wordApp = wordDoc.Application;
wordApp.WindowSelectionChange += new Microsoft.Office.Interop.Word.ApplicationEvents4_WindowSelectionChangeEventHandler(text_selected);
关于C# VSTO Outlook 插件 - 调试文本选择事件?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43238720/