Yes. However nothing gives me the click coordinates.
I am dragging an item to a subclassed QLabel. When the drop occurs, the
top-left of the item is placed at the mouse cursor. This is wrong. The item
should be placed at wherever Qt drew it last, which is offset by the mouse
coords in the item.
________________________________
From: André Somers <an...@familiesomers.nl>
To: "interest@qt-project.org" <interest@qt-project.org>
Sent: Tuesday, April 17, 2012 11:00 AM
Subject: Re: [Interest] Getting QTreeView item click offset for DnD
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 <an...@familiesomers.nl>
>To: interest@qt-project.org
>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);
>>QModelIndexmi=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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