代码实现了用户是否从程序外部关闭了特定窗口 [英] code realize if the user closed a specific window from out side the program

问题描述

大家好

我写了一个代码，里面有一个按钮，可以通过openfiledialog打开powerpoint文件.
如果用户通过该按钮打开了一个文件，然后关闭了该文件，则我需要在用户关闭该文件时就意识到的代码.

hi all

i wrote a code that have a button to open power point file by openfiledialog.
if the user opened a file by that button, and then closed this file,i need the code that realize whenever the user closed that file.

推荐答案

如果创建了使用互操作的演示文稿，您可以使用 EApplication_Event.PresentationClose [ ^ ]事件以在演示文稿关闭之前获得通知.

If you create the presentation using interop, you can use EApplication_Event.PresentationClose[^] event to get a notification before the presentation is closed.

启动流程时，请处理Process.Exited事件-只要启用Process.EnableRaisingEvents在外部应用结束时获取事件:

When you start the process, handle the Process.Exited event - as long as you enable the Process.EnableRaisingEvents you will get an event when the external app ends:

    Process p = new Process();
    ProcessStartInfo psi = new ProcessStartInfo(@"D:\Temp\myLargeTextFile.txt");
    p.EnableRaisingEvents = true;
    p.StartInfo = psi;
    p.Exited += new EventHandler(process_Exited);
    p.Start();
    ...

void process_Exited(object sender, EventArgs e)
    {
    MessageBox.Show("It closed");
    }

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