[PyQt] qtreeview vs qtreewidget selection model?

Jordan Olson jorxster at gmail.com
Thu Oct 4 23:52:40 BST 2012

Ah, cheers Andreas, figured it out!

I was setting it to
self.treeWidget.setSelectionMode(  QAbstractItemView.MultiSelection  )
but what I really wanted was
self.treeWidget.setSelectionMode(  QAbstractItemView.ExtendedSelection  )

thanks again!

On Fri, Oct 5, 2012 at 11:46 AM, Andreas Pakulat <apaku at gmx.de> wrote:
> Hi,
> On Fri, Oct 5, 2012 at 12:20 AM, Jordan Olson <jorxster at gmail.com> wrote:
>> So here's what's happening. I'm implementing a custom QTreeView model,
>> and though I have it working pretty well, the one little peeve I
>> haven't figured out is the way it handles selection-
>> --any default list/table/tree widget that ships with PyQt (or most
>> windows managers for that manager) have it so that when you left click
>> on an unselected item, it *unselects* any other selection you have,
>> unless you hold down Ctrl or Shift. Follow?
>> But with my qtreeview widget, I've got it displaying my custom model,
>> but it handles selection via mouse a little differently- clicking
>> seems to merely toggle item selection, and left clicking on an
>> unselected item doesn't deselect already selected items as you might
>> expect.
>> Can you give me a tip as to what methods I should be looking at? I
>> have a hunch it has to do with selection Model, but can't figure out
>> how to alter/implement this in pyQt.
> No, the selection-model only keeps track of the selected indexes.
> Which indexes are being selected upon clicking (with or without
> modifiers) depends on the selection mode of the QTreeView (this
> propery comes from the base class QAbstractItemView). IIRC the
> behaviour you want is called ExtendedSelection in Qt.
> Andreas

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