Chapter 6. Layout Management
Every widget that is placed on a form must be given an appropriate size and position. Qt provides several classes that lay out widgets on a form:
QStackLayout. These classes are so convenient and easy to use that almost every Qt developer uses them, either directly in source code or through Qt Designer.
Another reason to use Qt’s layout classes is that they ensure that forms adapt automatically to different fonts, languages, and platforms. If the user changes ...