问题描述
如果我使用 startDetached() 启动 QProcess，我会收到完成的信号吗?我正在尝试启动一个进程，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
不，当你使用 startDetached 时无法得到信号，因为你没有对象.
No you can't get a signal when you use startDetached because you have no object.
startDetached 是一个静态函数，当您调用它时，进程会直接启动，而无需创建 QProcess 对象.因此，即使有信号，您也无法将其连接到任何东西，因为您没有要连接的对象.
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.
如果你想要一个信号，你应该创建一个 QProcess 对象，然后在它上面调用 start.当进程完成时，您将能够获得完成的信号.
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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