Struggling with signal which has a default parameter.

[wysota]

The problem is what you said in post #13 - QMetaObject is stepping into a wrong case. It should go into 7 and not 8. Can you show us all places where you emit this signal? In post #6 there is an emit layoutChanged() but it seems this is a different "layoutChanged()".

[JPNaude]

I've updated my example in post #16 to show what the other layoutChanged() signal is. It will make more sense now, they should be independent. I can try to change the signal names as you said to see if it makes any difference.

[JPNaude]

I figured it out...

Was my mistake. The observer class I mentioned is able to observe other observers creating a tree structure. The problem was that I emitted the signal in an observer low down in the tree and as the signal propagated through to the top observer (connected to the view) the parameter got lost since those connections were made without the parameters. I forgot that this is happening and thought I emitted the signal on the top level observer. My bad.

Thanks for your help and time again.
Cheers,
Jaco