Hi to all!

I've been having problems with layouts for quite some time, I've read the docs and some book but I still do not get it . I have QWidget with HBoxLayout for some pushbuttons and then vertical main layout with this pushbutton layout and under it there is QGroupBox. Now, how do I resize layout to full size of coresponding widget so the buttons and QGroupBox would be larger? Sorry for new question, but I am losing my mind ... If I harcode size with QGroupBox::setFixedSize, then it works, but this is NOT what I want ...

Sincerely,
Marko