[Qt-interest] [SOLVED] Re: How to make a QPushButton inside a QGraphicsView lose focus ?

[Aaron Lewis]

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On 05/11/2010 03:33 AM, Malyushytsky, Alex wrote:
> It is not clear what you want to do to me so I would try to clarify what is happening in your case in hope it will help you.
> 
>>> And now my QPushButton takes focus , how should i make my scene get focus now ?
> The scene already has a focus and the focus item is leaveButton widget.
> 
> Look at QGraphicsScene::setFocus help:
> "void QGraphicsScene::setFocus ( Qt::FocusReason focusReason = Qt::OtherFocusReason )
> Sets focus on the scene by sending a QFocusEvent to the scene, passing focusReason as the reason. If the scene regains focus after having previously lost it while an item had focus, the last focus item will receive focus with focusReason as the reason.
> If the scene already has focus, this function does nothing."
> 
> If you want move focus to another item you can use
> void QGraphicsScene::setFocusItem ( QGraphicsItem * item, Qt::FocusReason focusReason = Qt::OtherFocusReason )

Cuz my parent Widget is QGraphicsView based , so i'd try with this later
if possible.

> 
> If you don't want leaveButton have focus ever, use
> setFocusPolicy ( Qt::FocusPolicy policy ) // Setting Qt::NoFocus on a widget will clear the ItemIsFocusable flag
> 
> QGraphicsProxyWidget * w =  QGraphicsScene::addWidget ( QWidget * widget, Qt::WindowFlags wFlags = 0 )
> scene->addItem(leaveButton);
> 
> 
> Important! At the first glance I would expect compiler error in
>>>      scene->addItem(leaveButton);

It's scene->addWidget(leaveBtn) instead ;-)

> In my Qt version addItem is declared as :
> void QGraphicsScene::addItem ( QGraphicsItem * item )
> leaveButton is instance of QPushButton  and QPushButton is not  derived from QGraphicsItem
> I would expect to see addWidget instead.
> 

Yeah , it's called FocusPolicy , i tried to setFocusPolicy(Qt::NoFocus)
on QPushButton and it works.

Thanks Alex.


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Aaron Lewis - PGP: 0x4A6D32A0
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