[Qt5-feedback] Adding better data access method to QAbstractItemModel?

[André Pönitz]

On Monday 11 July 2011 14:43:41 ext Stephen Kelly wrote:
> That means this is source compatible for the emitter but not the receiver, 
> ie,
> 
> emit dataChanged(foo, bar);
> 
> still works, but
> 
> connect(model, SIGNAL(dataChanged(QMI,QMI)), SLOT(onDataChanged(QMI,QMI));
> 
> Needs to be changed to at least:
> 
> connect(model, SIGNAL(dataChanged(QMI,QMI,QSet<int>)), 
> SLOT(onDataChanged(QMI,QMI));
> 
> The (source compatible) alternative would be to add a roleDataChanged signal 
> with the signature I proposed instead of changing dataChanged (and possibly 
> deprecating dataChanged).
> 
> What are your thoughts? Are small source incompatibilities like that 
> acceptible?

Having to touch all dataChanged() receivers looks quite intrusive.

Andre'