    {-# LINE 2 "./Graphics/UI/Gtk/Misc/DrawingArea.chs" #-}
    -- -*-haskell-*-
    -- GIMP Toolkit (GTK) Widget DrawingArea
    --
    -- Author : Axel Simon
    --
    -- Created: 22 September 2002
    --
    -- Copyright (C) 1999-2005 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)
    --
    -- A widget for custom user interface elements
    --
    module Graphics.UI.Gtk.Misc.DrawingArea (
    -- * Detail
    --
    -- | The 'DrawingArea' widget is used for creating custom user interface
    -- elements. It's essentially a blank widget; you can draw on
    -- the 'Drawable' returned by 'drawingAreaGetDrawWindow'.
    --
    -- After creating a drawing area, the application may want to connect to:
    --
    -- * Mouse and button press signals to respond to input from the user.
    --
    -- * The 'realize' signal to take any necessary actions when the widget is
    -- instantiated on a particular display. (Create GDK resources in response to
    -- this signal.)
    --
    -- * The 'configureEvent' signal to take any necessary actions when the
    -- widget changes size.
    --
    -- * The 'exposeEvent' signal to handle redrawing the contents of the
    -- widget.
    --
    -- Expose events are normally delivered when a drawing area first comes
    -- onscreen, or when it's covered by another window and then uncovered
    -- (exposed). You can also force an expose event by adding to the \"damage
    -- region\" of the drawing area's window; 'widgetQueueDrawArea' and
    -- 'windowInvalidateRect' are equally good ways to do this. You\'ll then get an
    -- expose event for the invalid region.
    --
    -- The available routines for drawing are documented on the GDK Drawing
    -- Primitives page.
    --
    -- To receive mouse events on a drawing area, you will need to enable them
    -- with 'widgetAddEvents'. To receive keyboard events, you will need to set the
    -- 'widgetCanFocus' attribute on the drawing area, and should probably draw some
    -- user-visible indication that the drawing area is focused.

    -- * Class Hierarchy
    -- |
    -- @
    -- | 'GObject'
    -- | +----'Object'
    -- | +----'Widget'
    -- | +----DrawingArea
    -- @

    -- * Types
      DrawingArea,
      DrawingAreaClass,
      castToDrawingArea, gTypeDrawingArea,
      toDrawingArea,

    -- * Constructors
      drawingAreaNew,

    -- * Methods

      ) where

    import Control.Monad (liftM)

    import System.Glib.FFI
    import Graphics.UI.Gtk.Abstract.Object (makeNewObject)
    import Graphics.UI.Gtk.Types
    {-# LINE 94 "./Graphics/UI/Gtk/Misc/DrawingArea.chs" #-}

    {-# LINE 99 "./Graphics/UI/Gtk/Misc/DrawingArea.chs" #-}

    --------------------
    -- Constructors

    -- | Creates a new drawing area.
    --
    drawingAreaNew :: IO DrawingArea
    drawingAreaNew :: IO DrawingArea
    drawingAreaNew =
      (ForeignPtr DrawingArea -> DrawingArea, FinalizerPtr DrawingArea)
    -> IO (Ptr DrawingArea) -> IO DrawingArea
    forall obj.
    GObjectClass obj =>
    (ForeignPtr obj -> obj, FinalizerPtr obj) -> IO (Ptr obj) -> IO obj
    makeNewObject (ForeignPtr DrawingArea -> DrawingArea, FinalizerPtr DrawingArea)
    forall {a}. (ForeignPtr DrawingArea -> DrawingArea, FinalizerPtr a)
    mkDrawingArea (IO (Ptr DrawingArea) -> IO DrawingArea)
    -> IO (Ptr DrawingArea) -> IO DrawingArea
    forall a b. (a -> b) -> a -> b
    $
      (Ptr Widget -> Ptr DrawingArea)
    -> IO (Ptr Widget) -> IO (Ptr DrawingArea)
    forall (m :: * -> *) a1 r. Monad m => (a1 -> r) -> m a1 -> m r
    liftM (Ptr Widget -> Ptr DrawingArea
    forall a b. Ptr a -> Ptr b
    castPtr :: Ptr Widget -> Ptr DrawingArea) (IO (Ptr Widget) -> IO (Ptr DrawingArea))
    -> IO (Ptr Widget) -> IO (Ptr DrawingArea)
    forall a b. (a -> b) -> a -> b
    $
      IO (Ptr Widget)
    gtk_drawing_area_new
    {-# LINE 110 "./Graphics/UI/Gtk/Misc/DrawingArea.chs" #-}

    foreign import ccall unsafe "gtk_drawing_area_new"
      gtk_drawing_area_new :: (IO (Ptr Widget))