add_constraint

Description:

public void add_constraint (owned Constraint constraint)

Adds a constraint to the layout manager.

The [[email protected]:source] and [[email protected]:target] properties of `constraint` can be:

set to `NULL` to indicate that the constraint refers to the widget using `layout`
set to the [[email protected]] using `layout`
set to a child of the [[email protected]] using `layout`
set to a [[email protected]] that is part of `layout`

The this acquires the ownership of constraint after calling this function.

this	a `GtkConstraintLayout`
constraint	a [[email protected]]