When the main message loop is closed, the application exits.
主消息循环关闭后,应用程序将退出。
However, during a modal loop, the system retrieves and dispatches messages without allowing an application the chance to filter the messages in its main message loop.
然而,在模式循环期间,系统会收到、分派消息,但是并不给应用程序机会去过滤主消息循环中的消息。
Unless it finds one or the other, it triggers a message in the main loop.
除非它找到一个查询或定义,否则它会都在主循环中触发消息。
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