Constraints are useful to specify conditions to different arrangements using the same Layout manager.
Each widget can have a constraint. It's only useful when the parent has a layout manager that known about the constraint of the widget (the child).
A constraint is an object to indicate to the layout manager (of the parent widget) special properties to be used when the layout manager must to arrange the widget.
Public Member Functions
|Constraint (const Constraint &constraint)|
|Constraint::Constraint||(||const Constraint &||constraint||)|