[PyKDE] Strange problem with signal/slot

[Thomas Muders]

Hi List,

i've used PyQt3 before and now I'm getting started with PyQt4. I'm
interested in the Interview (Model/View) framework and so I have been
"porting" a C++ tutorial using Interview to PyQt. I'm using the
20060126 version with Qt 4.1.0 under Linux as the 20060127 version
didn't work.
I've a strange problem with emit:
in a subclass of QAbstractItemModel I have the following code in the
method set Data:

    def setData(self, idx, value, role):
 [...]
        if ok:
            self.emit(SIGNAL("dataChanged(QModelIndex&,QModelIndex&)"),
(idx,idx))
            curExpense.convertedAmount = curExpense.originalAmount * \
               curExpense.conversionRate
            cellIndex = self.index(idx.row(), ConvertedAmount, QModelIndex())
            self.emit(SIGNAL("dataChanged(QModelIndex&,QModelIndex&)"),
(cellIndex,cellIndex))
        return ok

OK is a bool, which is the required return type for the function. If I
don't have the emit's, everything is OK. When the emit's are there
like in the sample, I get the following error on the console:
TypeError: invalid result type from ExpenseModel.setData()

I verified with print that the type of ok is in fact bool, so there is
no problem (anyway without emit it works)

is this a bug in PyQt or a misunderstanding?

Thomas