Class: Gtk::CClosureExpression

Inherits:

Expression

• Object
• Expression
• Gtk::CClosureExpression

Defined in:

(unknown)

Overview

A variant of GtkClosureExpression using a C closure.

Instance Method Summary

• #initialize(value_type, marshal, n_params, params, callback_func, user_data, user_destroy) ⇒ Gtk::CClosureExpression constructor

  Creates a GtkExpression that calls callback_func when it is evaluated.

Methods inherited from Expression

#bind, #evaluate, #is_static, #ref, #unref, #value_type, #watch

Constructor Details

#initialize(value_type, marshal, n_params, params, callback_func, user_data, user_destroy) ⇒ Gtk::CClosureExpression

Creates a GtkExpression that calls callback_func when it is evaluated.

This function is a variant of [ctorGtk.ClosureExpression.new] that creates a GClosure by calling g_cclosure_new() with the given callback_func, user_data and user_destroy.

Parameters:

• value_type (GLib::Type) —

  the type of the value that this expression evaluates to

• marshal (GObject::ClosureMarshal) —

  marshaller used for creating a closure

• n_params (Integer) —

  the number of params needed for evaluating closure

• params (Array<Gtk::Expression>) —

  expressions for each parameter

• callback_func (GObject::Callback) —

  callback used for creating a closure

• user_data (GObject) —

  user data used for creating a closure

• user_destroy (GObject::ClosureNotify) —

  destroy notify for user_data