QtableWidget setting Tab Order

[petergollapalli]

Hi every one I am new to Qt
I have one QDialog in that i kept one QtableWidget
and also iam having two Push Buttons
One Button is for adding Rows dynamically to Qtablewidget
and another push button is for Calculating sum of Columns

here my problem
my Tab key is at "Sum" Button
when i pressed Shift+Tab key
Tab position is moving to last but one Row
What i want is It should move to last Row

Sorry my english not so good, I hope You understand my problem
can any one help in this problem
Thanks in advance