如何截获Qt中给定事件发出的所有信号？ [英] How to intercept ALL signals emitted by a given event in Qt?

问题描述

我可以想象，根据事件的不同，可能会有很多，但同时，我想这可能是调试的最佳方法，也是一个有趣的课程。

I can imagine that there might be quite a few of them depending on the event, but at the same time, I guess this can be a best way to debug, and an interesting lesson.

我为什么需要它？我正在使用基于 QWidget 的自定义类，当我取消附加基于 QDockWidget 的类时，该类不会扩展在同一窗口中。知道在断开此扩展坞小部件断开连接时会发出什么信号，这将帮助我选择需要在自定义类中覆盖的方法。

Why would I need it? I'm using some custom class based on the QWidget, which does not expand when I de-attach a QDockWidget based in the same window. Knowing what signals are emitted when this dock widget is being de-attached would help me to chose which method I need to overwrite in my custom class.

不想检查文档中所有可能的信号，而只是查看我在应用程序中执行某些操作时发出的信号。

In other words, I don't want to check every possible signal from the documentation, but just see which signals are emitted when I perform some action in my application.

推荐答案

使用任何公共API都不可能。

This isn't possible with any public API.

但是，如果将代码放入基于QTestLib的单元测试中，则可以运行单元测试使用 -vs 打印每个发出的信号。

But, if you put your code into a QTestLib-based unit test, you can run the unit test with -vs to print out every emitted signal.

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