Hi Arun,
On Sat, Feb 5, 2011 at 3:00 PM, Arun Srinivasan <rulf...@gmail.com> wrote:
> Howdy!
>
> I'm new to PySide (and just a hobbyist programmer), so please excuse
> any stupidity on my end.
>
> I'm trying to display different information about items in a ListView
> as the selection changes. I've found myself having to subclass the
> ListView like so in order to get it working (which it is, at the
> moment):
>
>
> class SimpleListView(QListView):
> selectionChangedSig.nal = Signal(object, object)
This is correct you can use any python type as signal argument, but
this will be not converted to C++.
if you want pass this signal with any C++ slot pay attention in the
signature, use types which can be converted to c++,
you can use the "name" of the type istead of the type. something like
"Signal('QObject', 'QVariant')".
OBS: I do not know you you cute and paste your code here but check the
Signal declaration you make a typo here.
wrong: selectionChangedSig.nal = Signal(object, object)
correct: selectionChangedSignal = Signal(object, object)
>
> def __init__(self, parent=None):
> super(SimpleListView, self).__init__(parent)
>
> def selectionChanged(self, selected, deselected):
> self.selectionChangedSignal.emit(selected, deselected)
Yes this is correct, if you have problems whith that please fill a bug.
>
>
> In doing this and reading through various docs, a couple of questions arose:
>
> 1. What are the valid types that QtCore.Signal() accepts? The
> documentation page has examples for "str" and "int", but here I've got
> a QItemSelection. Throwing "object" ("selectionChangedSignal =
> Signal(object, object)") makes it work, but I don't know why exactly.
> 2. "selectionChanged" is defined as a slot inherited by QListView from
> QAbstractItemView. The problem is, I want it to be a signal. I can do
> what I've done here, but I'd rather just catch whatever signal that
> the "selectionChanged" slot is connected to. Is that possible?
BR
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--
Renato Araujo Oliveira Filho
Instituto Nokia de Tecnologia - INdT
Mobile: +55 (81) 8704-2144
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