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|
-- -*-haskell-*-
-- GIMP Toolkit (GTK) GType
--
-- Author : Axel Simon
--
-- Created: 1 June 2001
--
-- Copyright (c) 1999..2002 Axel Simon
--
-- Copyright (C) 2001 Axel Simon
--
-- This library is free software; you can redistribute it and/or
-- modify it under the terms of the GNU Lesser General Public
-- License as published by the Free Software Foundation; either
-- version 2.1 of the License, or (at your option) any later version.
--
-- This library is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-- Lesser General Public License for more details.
--
-- |
-- Maintainer : gtk2hs-users@lists.sourceforge.net
-- Stability : provisional
-- Portability : portable (depends on GHC)
--
-- This module implements only the necessities for the GTK binding.
--
module System.Glib.GType (
GType,
typeInstanceIsA,
glibTypeInit,
) where
import System.Glib.FFI
{# context lib="glib" prefix="g" #}
type GType = {#type GType#}
-- | Check if an object is of the specific type or derived from it.
--
-- * Internally used by Hierarchy.
--
typeInstanceIsA :: Ptr () -> GType -> Bool
typeInstanceIsA obj p = toBool $
unsafePerformIO ({#call unsafe g_type_check_instance_is_a#} obj p)
-- | Prior to any use of the glib type/object system, @glibTypeInit@ has to
-- be called to initialise the system.
--
-- Note that this is not needed for gtk applications using @initGUI@ since
-- that initialises everything itself. It is only needed for applications
-- using glib directly, without also using gtk.
--
glibTypeInit :: IO ()
glibTypeInit = {# call g_type_init #}
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