问题描述
如果我使用startDetached（）启动QProcess，我会得到一个完成的信号吗？我试图启动一个进程，但我需要能够在进程终止时获得一个事件。
Do I get a finished signal if I start a QProcess using startDetached()? I'm trying to start a process, but I need to be able to get an event when the process has terminated.
推荐答案
当你使用startDetached因为你没有对象时，你不能得到一个信号。
No you can't get a signal when you use startDetached because you have no object.
startDetached是一个静态函数，当你调用它的时候，一个QProcess对象。因此，即使有信号，您也无法将其连接到任何对象，因为您没有连接对象。
startDetached is a static function and when you call it the process is started directly without creating a QProcess object. Therefore, even if there was a signal you would not be able to connect it to anything since you have no object to connect from.
如果您需要一个信号，您应该创建一个QProcess对象然后调用start就可以了。然后，您可以在过程完成时获得完成的信号。
If you want a signal you should create a QProcess object and then call start on it. You will then be able to get the finished signal when the process finishes.
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