Op 17-4-2012 16:54, Jason H schreef:
Well I am confused about how the view works.
I'm using QStandardItems, so whatever Qt does with those... I can't
find documentation anywhere...
The items in the model do not become widgets. That would be very
inefficient. Instead, they are rendered in the view using a delegate
that has been set on your view. By default, that is a QStyledItemDelegate.
Anyway, for D&D purposes, an item is just a package of data. At the
moment you have the model index, you have access to the data of the item.
Perhaps the question should be: why are you reimplementing the
mousePressEvent in this context at all? Did you study the "Using Drag
and Drop with Item Views" topic from the Model/View Programming
documentation page?
André
------------------------------------------------------------------------
*From:* André Somers <[email protected]>
*To:* [email protected]
*Sent:* Tuesday, April 17, 2012 10:40 AM
*Subject:* Re: [Interest] Getting QTreeView item click offset for DnD
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?
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