PySide window does not resize to fit screen

[Hedieh Ebrahimi]

Thanks Laura, 

In my user interface I have many group boxes that are located inside the main widget. All the group boxes and their child widgets have fixed sizes. 

How can I use the width and height I get from availableGeometry or ScreenGeometry to multiply 

screenGeometry = QApplication.instance().desktop().screenGeometry() 
availGeometry = QApplication.instance().desktop().availableGeometry() 
width, height = availGeometry.width(), availGeometry.height() 

to resize my geometry by a ratio? Is this a good approach?