[PyQt] How to update an QAbstactTableModel

[despen at verizon.net]

Hi,

I'm new to pyqt4, sorry if this is a beginners question.

I've written a stock portfolio tracker in pyqt4.  The main window which
is a QAbstractTableModel has an Update button.  When I click it, the
program gets new stock prices and updates the data in the table.

My problem is that the data displayed in the table doesn't update until
the window loses and regains focus.  I've tried calling a method that
emits a "DataChanged" signal and I've also tried "LayoutChanged".
Neither appears to do the job.

I can post what I have if requested...

Thanks.