[Qt-interest] QTabWidget resize events on hidden tabs

[Tony Rietwyk]

Giacomo wrote:

> Hi.
> Can someone explain how QResizeEvents are delivered to hidden 
> widgets of a 
> QTabWidget.
> 
> I need to place QWidgets on the tabs of a QTabWidget, and to 
> proportionally 
> resize them when the QTabWidget is resized.
> 
> I do like this:
> 
> QTabWidget *tabW = new QTabWidget;
> QWidget *tab1 = new QWidget(0);
> QWidget *tab2 = new QWidget(0);
> tabW->addTab(tab1);
> tabW->addTab(tab2);
> QLabel *l1 = new QLabel(tab1);
> QLabel *l2 = new QLabel(tab2);
> 
> When I resize QTabWidget, I want to resize proportionally 
> labels l2 and l1.
> But if tab1 is visible, then it seems that resize events on 
> tab2 have an 
> invalid oldSize().
> 
> How can I do to cleanly resize widgets children of hidden tabs?
> 
> Thanks in advance.
> 
> Giacomo

Hi, 

I have recently found that some size settings are not initialised as you
would expect until the show event - eg, frameGeometry doesn't work when
called in the constructor.  

Try setting the label size in the showEvent of tab2, either before or after
calling the inherited routine.  

Tony.