Creates a GtkExpression that calls closure when it is evaluated. closure is called with the this object and the results of evaluating the params expressions.
the type of the value that this expression evaluates to
closure to call when evaluating this expression. If closure is floating, it is adopted
expressions for each parameter
a new GtkExpression
ConstructionException GTK+ fails to create the object.
See Implementation
Creates a GtkExpression that calls closure when it is evaluated. closure is called with the this object and the results of evaluating the params expressions.