mouseDoubleClickEvent on QGraphicsItem's

How can I check for a double-click on my items?

Quote:

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Originally Posted by been_1990

How can I check for a double-click on my items?

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What items? :confused::confused:

bool QGraphicsItem::sceneEvent ( QEvent * event )

event is QEvent::GraphicsSceneMouseDoubleClick

How exactly do I use that?

why cant you re-impliment "void mouseDoubleClickEvent ( QGraphicsSceneMouseEvent * event ) ".

To use sceneEvent(), u should first register the item for which u need all the events and filter the events.
To register you can use "void installSceneEventFilter ( QGraphicsItem * filterItem )".
and override bool sceneEvent ( QEvent * event ) and filter the events which you need..

wow..... maybe an example? Thats a litle beyond me.

see the previous to last post of this thread
http://www.qtcentre.org/forum/f-newb...eys-22921.html

Code:

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bool RecRepView:: eventFilter(QObject *ob, QEvent *e)
{
        if(e->type() == QEvent::KeyPress){
                printf("is it coming inside event..\n");
                const QKeyEvent *ke = static_cast<QKeyEvent *>(e);
                if(ke->key()==Qt::Key_F1){
                        qApp->quit();
                        printf("Logout buttin clicked..\n");
                }
                return true;
        }
         return QWidget::eventFilter(ob, e);
}

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Ok. So just by having this function it gets called automatically every time QObject *ob receives an event?
Or do I still need signals/slots?

Code:

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e->type() == QEvent::KeyPress

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instead u use

Code:

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e->type() == QEvent::GraphicsSceneMouseDoubleClick

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and inside the condition u can do any thing .. display a alert message dialog or emit a signal or return a statement ..etc ..

so I'll use the function like ? :

Code:

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eventFilter(myGraphicsItem, QEvent *e);

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Quote:

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Originally Posted by been_1990

so I'll use the function like ? :

Code:

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eventFilter(myGraphicsItem, QEvent *e);

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:confused: why u have to use function like eventFilter(myGraphicsItem, QEvent *e) ...!

its a virtual function reimplement the virtual function in your QGraphicsView class and install this event filter in your QGraphicsScene() of the view ..

see the link
http://doc.trolltech.com/4.3/eventsa...#event-filters

Okay. Now my mind cleared up. Thanks for the help, my problem is solved.Tx.