How can I connect two objects from different windows in Qt?

Question

I have a window1 which has 2 buttons, one add button and a next button.

The add button is initially disabled. Once clicked on next button, a new window2 is opened. On that window there is a OK button.

I want to enable the add button from window1 after clicking on the OK button from window2 .

Is it possible to connect two objects ( signal & slot ) from diffrent windows? If yes, where ( on which .cpp file ) do I have to write the connect function?

Answer 1

Of course you can connect a signal from one object to a slot in a different object - otherwise the functionality wouldn't be very useful.

You can either do the connection outside either object in some code that has access to both, or you can pass a pointer of/to one of the objects to the other and then do the connection inside the other object. What makes the most sense depends on how your code is structured.