summary in this we discuss how to add messageboxtooltipprogress bargrid layout and other layout management and customized gui features codes for every widget is covered with output questions design calculator with proper grid layout change the title of main screen write small code for that discuss how to change the border width of the spin box difference between spinbox and combo box create menu driven program for multiplication and division using menu bar additionsubstraction references python gui programming cookbook -burkahard meierpackt publication nd edition ****