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|
{-# OPTIONS_HADDOCK hide #-}
-- -*-haskell-*-
-- GIMP Toolkit (GTK) Widget GObject
--
-- Author : Axel Simon
--
-- Created: 9 April 2001
--
-- 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.
--
-- #hide
-- |
-- Maintainer : gtk2hs-users@lists.sourceforge.net
-- Stability : provisional
-- Portability : portable (depends on GHC)
--
-- Implements the base GObject class.
--
module System.Glib.Types (
GObject(..),
GObjectClass,
mkGObject,
unGObject,
toGObject,
unsafeCastGObject,
castToGObject,
objectUnref
) where
import System.Glib.FFI
{# context lib="glib" prefix="g" #}
{#pointer *GObject foreign newtype #} deriving (Eq)
mkGObject = (GObject, objectUnref)
unGObject (GObject o) = o
class GObjectClass o where
-- | Safe upcast.
toGObject :: o -> GObject
-- | Unchecked downcast.
unsafeCastGObject :: GObject -> o
instance GObjectClass GObject where
toGObject = id
unsafeCastGObject = id
castToGObject :: GObjectClass obj => obj -> obj
castToGObject = id
-- | Decrease the reference counter of an object
--
foreign import ccall unsafe "&g_object_unref"
objectUnref :: FinalizerPtr a
|
