我需要实现一个带有按钮和日志小部件的表单，当按下按钮时，应该在另一个线程中开始一些长时间的工作。
该过程的详细信息应回显到日志中。
不应同时启动两个作业。
我正在考虑的方式：QThread使用自己的事件循环创建子类（当然moveToThread(this)在QThread的构造函数中调用），并将信号连接QButton到该线程的插槽doLongJob()。
听起来不错，还是通常是错误的？其他方式：比如说，每次用户按下按钮时创建新线程。似乎更糟。
是否有一些最佳实践来做这个很常见的事情？请给我一个建议。
Bard already answered in the comment, I asked him twice to write the same as an answer, but it seems he really doesn't want to.
So, I'm tired of waiting more than 7 months, and therefore have to do that myself, in order to get rid of this unanswered question.
The answer is:
You generally do not want to subclass QThread, but other than that, hooking up things with signals and slots is just fine.