[Interest] Getting QTreeView item click offset for DnD

[André Somers]

Op 17-4-2012 16:35, Jason H schreef:
> I need to repeat this. I'm still lost.
> here is my code (child is always NULL):
> voidDataPointTreeView::mousePressEvent(QMouseEvent*event)
> {
> 	QTreeView::mousePressEvent(event);
> 	QModelIndex  mi  =  indexAt(event->pos());
> 	QWidget  *child  =  indexWidget(mi);
> 	//QWidget  *child  =  static_cast<QWidget*>(childAt(event->pos()));
> 	if  (!child)
> 		return;
>
> 	m_dragOffset  =  event->pos()  -  child->pos();
> }
>
Are you even using widgets for your items? I mean: do you call 
setIndexWidget anywhere? If not, perhaps you should check what 
indexWidget() actually returns?

André



> ------------------------------------------------------------------------
> *From:* Jason H <scorp1us at yahoo.com>
> *To:* Interests Qt <interest at qt-project.org>
> *Sent:* Friday, April 13, 2012 12:04 PM
> *Subject:* [Interest] Getting QTreeView item click offset for DnD
>
> I need to drag model items from a QTreeView to a widget and make the 
> item appear in the widget at the right spot.
> I have it working except that the drop is not exact. It is off by 
> where the user clicked in the QStandardItem.
> I need to figure out how to get that click offset (i.e. QPoint(50,10)) 
> and factor that into the drop location (i.e 
> move(event->pos()-clickOffset);)
>
> What do I need to do to get that click offset inside the QTrreeView?
>
> Thanks.
>
>
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