Evaluates the given expression and on success stores the result
in @value.
The GType of value will be the type given by
[method@Gtk.Expression.get_value_type].
It is possible that expressions cannot be evaluated - for example
when the expression references objects that have been destroyed or
set to NULL. In that case value will remain empty and FALSE
will be returned.
Evaluates the given expression and on success stores the result in @value.
The GType of value will be the type given by [method@Gtk.Expression.get_value_type].
It is possible that expressions cannot be evaluated - for example when the expression references objects that have been destroyed or set to NULL. In that case value will remain empty and FALSE will be returned.