[Qt-interest] QAbstractProxyModel methods index, parent, rowCount, columnCount not implemented?

[Andre Somers]

Op Wo, 18 mei, 2011 9:28 am, schreef Ross Bencina:
> Andre Somers wrote:
>> I would like to advise you that you _do_ subclass QSortFilterProxyModel
>> instead. It is much easier to work with, even if you don't want sorting
>> or filtering. There are no methods to reimplement that are only
>> concerned with book keeping.
>
> Yeah.. digging deeper I realise that QAbstractProxyModel doesn't even
> bridge
> the signals from the sourceModel through to to outside.. so it makes more
> problems than it solves.
>
>> Some examples of what you want to do:
>> http://developer.qt.nokia.com/wiki/QSortFilterProxyModel_subclass_to_add_a_checkbox
>> http://developer.qt.nokia.com/forums/viewthread/4788
>
> Thank you, that's really good to know.
>
> It would still be nice if there was a basic QAbstractDecoratorProxyModel
> base class that didn't have all the overhead of the QSortFilterProxyModel.
Not a bad idea, actually. A proxy model that is geared towards giving a
1:1 representation of the underlying data structure, but that allows you
to just decorate...
I am not sure if it makes much of a difference though. Is the overhead of
QSFPM so big?

André