How to access the UI from another class ?

[anda_skoa]

Aside from the fact that it is not very customary to send a QWidget pointer via a signal, the standard rules for signal/slot connects apply:

You need to have access to both the sender and the receiver pointer at the place where you put the connect.

So what good would a "dummy object" do?

Forget about Qt or signal/slots until you have a place where you have access to both pointers.
Basic C++.

Cheers,
_

[jps3001]

No help available ??

[anda_skoa]

There are plenty of C++ tutorials online, some of them should cover object creation, passing data through methods, storing data in variable and members.

Cheers,
_