如何杀死XtAppMainLoop（Motif）？
我想使用 XmCreate{Error|Warning|Info}Dialog 在基于 SDL 的应用程序的主窗口打开且任何程序数据可用之前在屏幕上显示一些消息。我希望打开对话框，打印预期的消息，当用户单击“确定”按钮时，应该关闭/删除该对话框以及我必须为其创建的顶部小部件。现在 afaik XtAppMainLoop 将循环并处理顶部小部件消息（窗口？），直到用户关闭它。我想在对话框返回时关闭它。我怎样才能做到这一点？
I want to use XmCreate{Error|Warning|Info}Dialog to display some message in screen in my SDL based application before its main window is open and any program data is available. I want the dialog to open, print the intended message, and when the user clicks on the OK button, the dialog plus the top widget I had to create for it should be closed/removed. Now afaik XtAppMainLoop will loop and process top widget messages (a window?) until the user closes it. I want to close it when the dialog returns though. How can I do that?
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经过数小时的谷歌搜索和阅读后，我发现您可以使用 XtAppSetExitFlag (XtAppContext)。
After hours and hours of googling and reading I have found out that you can use XtAppSetExitFlag (XtAppContext).
很简单，在从 XtAppMainLoop 返回的 XtAppContext 中，只需执行
p->exit_flag = 1;即可。应用程序简单地包含自己的主循环并做任何他们想做的事情也是很常见的。 XtAppMainLoop 所做的只是调用
XtAppNextEvent(app, &event)，然后调用XtDispatchEvent(&event)。It's easy, in the XtAppContext that is returned from XtAppMainLoop, just do
p->exit_flag = 1;.It's also common for applications to simply include their own main loop and do whatever they want. All XtAppMainLoop does is call
XtAppNextEvent(app, &event)and thenXtDispatchEvent(&event).