如何获得对另一个qt小部件功能的访问？

Question

I am working on a Qt/Python program, which includes one QMainWindow, that also has two widgets (Let's call them Widget A and Widget B).

I would like to get some value by running "someFunction()" which is arranged in Widget A from Widget B. So, I tried the following code in the constructor of Widget B:

self.someValue = self.parent().findChild(WidgetB).someFunction()

But it do not work at all. If I run this function in the constructor I do not even get any error or something.

Could someone explain this behaviour? Or better, tell me how to run this function in another widget!?

Thanks in advance!

Answer 1

I found the solution!

The problem was, that the parent-widget in the constructor has another parent than the rest of the class... or something like this.. but anyway, here is the code that worked properly:

self.parent().parent().findChild(widgets.WidgetA).someFunction()

Hope that I can help anyone who also has this problem!