从源码中看：QObject: Cannot create children for a parent that is in a different thread.
直接先上源码 关于parent->thread()在源码中的描述： 这个函数白话解释：当前创建的QObject对象与所传入的parent是否是在同一个依附线程中创建的，如果不是同一个依附线程则输出下面令人神志不清，一脸懵逼的打印 结论：创建QObject的对象，如果指定parent，则要在同一个依附线程创建才不会报这个问题；（屁话:如果不指定parent肯定就不会报）
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