Question

I have a widget and inside it are 32 buttons. I need to connect each button’s pressed() signal to a slot in order to call a function who’s parameters depend on which button I have pressed. Right now I did that by adding 32 slots in the form of on_QPushButtonName_pressed()
but thats a lot of slots. I was wondering if there is another way I could do it that is smaller. I have done something similar but I was working with custom widgets so I could just create a new signal in the code of my class but I would like to avoid creating a custom widget for just a single button.

Answer 1

Use the QSignalMapper class. The documentation – http://doc.qt.io/qt-5/qsignalmapper.html – has an example pretty close to what you want.