QTableWidget, excel like QTableWidgetItem cell

["qt interest"]

Hi,

I would like to make table cells like Microsoft excel, with a rectangle border and a "+" when the user select a cell :
 
---------
|       |
--------+

I don't know which function i have to redefine :
Is it this function ? 
void QTableView::paintEvent ( 
QPaintEvent * 
event )  [virtual protected]

Because the TableWidget that I used, is in a UI file, so i can't acces to this protected function .

So i don't know witch function to use, to repaint the selection cell renderer.

Thanks