{-# LINE 1 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

{-# LINE 2 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
{-# LANGUAGE Safe #-}

{-# LINE 6 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
-----------------------------------------------------------------------------
-- |
-- Module      :  Graphics.Win32.GDI.Bitmap
-- Copyright   :  (c) Alastair Reid, 1997-2003
-- License     :  BSD-style (see the file libraries/base/LICENSE)
--
-- Maintainer  :  Esa Ilari Vuokko <ei@vuokko.info>
-- Stability   :  provisional
-- Portability :  portable
--
-- A collection of FFI declarations for interfacing with Win32.
--
-----------------------------------------------------------------------------

module Graphics.Win32.GDI.Bitmap(
        RasterOp3,
        RasterOp4,
        sRCCOPY,
        sRCPAINT,
        sRCAND,
        sRCINVERT,
        sRCERASE,
        nOTSRCCOPY,
        nOTSRCERASE,
        mERGECOPY,
        mERGEPAINT,
        pATCOPY,
        pATPAINT,
        pATINVERT,
        dSTINVERT,
        bLACKNESS,
        wHITENESS,

        mAKEROP4,

        BITMAP,
        LPBITMAP,
        setBITMAP,
        deleteBitmap,
        createCompatibleBitmap,
        createBitmap,
        createBitmapIndirect,
        createDIBPatternBrushPt,
        getBitmapDimensionEx,
        setBitmapDimensionEx,
        getBitmapInfo,

        BitmapCompression,
        bI_RGB,
        bI_RLE8,
        bI_RLE4,
        bI_BITFIELDS,

        ColorFormat,
        dIB_PAL_COLORS,
        dIB_RGB_COLORS,

        LPBITMAPINFO,
        BITMAPINFOHEADER,
        LPBITMAPINFOHEADER,
        getBITMAPINFOHEADER_,

        BITMAPFILEHEADER,
        LPBITMAPFILEHEADER,
        getBITMAPFILEHEADER,

        sizeofBITMAP,
        sizeofBITMAPINFO,
        sizeofBITMAPINFOHEADER,
        sizeofBITMAPFILEHEADER,
        sizeofLPBITMAPFILEHEADER,

        createBMPFile,
        cBM_INIT,
        getDIBits,
        setDIBits,
        createDIBitmap

        ) where

import System.Win32.Types
import Graphics.Win32.GDI.Types

import Control.Monad (liftM)
import Foreign
import Foreign.C


{-# LINE 94 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
#include "windows_cconv.h"


{-# LINE 97 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

----------------------------------------------------------------
-- Resources
----------------------------------------------------------------

-- Yoiks - name clash
-- %dis bitmap x = ptr ({LPTSTR} x)
--
-- type Bitmap = LPCTSTR
--
-- intToBitmap :: Int -> Bitmap
-- intToBitmap i = makeIntResource (toWord i)
--
-- %fun LoadBitmap :: MbHINSTANCE -> Bitmap -> IO HBITMAP
-- %fail { res1 == 0 } { ErrorString("LoadBitmap") }
--
-- %const Bitmap
-- % [ OBM_CLOSE        = { MAKEINTRESOURCE(OBM_CLOSE)       }
-- % , OBM_UPARROW      = { MAKEINTRESOURCE(OBM_UPARROW)     }
-- % , OBM_DNARROW      = { MAKEINTRESOURCE(OBM_DNARROW)     }
-- % , OBM_RGARROW      = { MAKEINTRESOURCE(OBM_RGARROW)     }
-- % , OBM_LFARROW      = { MAKEINTRESOURCE(OBM_LFARROW)     }
-- % , OBM_REDUCE       = { MAKEINTRESOURCE(OBM_REDUCE)      }
-- % , OBM_ZOOM         = { MAKEINTRESOURCE(OBM_ZOOM)        }
-- % , OBM_RESTORE      = { MAKEINTRESOURCE(OBM_RESTORE)     }
-- % , OBM_REDUCED      = { MAKEINTRESOURCE(OBM_REDUCED)     }
-- % , OBM_ZOOMD        = { MAKEINTRESOURCE(OBM_ZOOMD)       }
-- % , OBM_RESTORED     = { MAKEINTRESOURCE(OBM_RESTORED)    }
-- % , OBM_UPARROWD     = { MAKEINTRESOURCE(OBM_UPARROWD)    }
-- % , OBM_DNARROWD     = { MAKEINTRESOURCE(OBM_DNARROWD)    }
-- % , OBM_RGARROWD     = { MAKEINTRESOURCE(OBM_RGARROWD)    }
-- % , OBM_LFARROWD     = { MAKEINTRESOURCE(OBM_LFARROWD)    }
-- % , OBM_MNARROW      = { MAKEINTRESOURCE(OBM_MNARROW)     }
-- % , OBM_COMBO        = { MAKEINTRESOURCE(OBM_COMBO)       }
-- % , OBM_UPARROWI     = { MAKEINTRESOURCE(OBM_UPARROWI)    }
-- % , OBM_DNARROWI     = { MAKEINTRESOURCE(OBM_DNARROWI)    }
-- % , OBM_RGARROWI     = { MAKEINTRESOURCE(OBM_RGARROWI)    }
-- % , OBM_LFARROWI     = { MAKEINTRESOURCE(OBM_LFARROWI)    }
-- % , OBM_OLD_CLOSE    = { MAKEINTRESOURCE(OBM_OLD_CLOSE)   }
-- % , OBM_SIZE         = { MAKEINTRESOURCE(OBM_SIZE)        }
-- % , OBM_OLD_UPARROW  = { MAKEINTRESOURCE(OBM_OLD_UPARROW) }
-- % , OBM_OLD_DNARROW  = { MAKEINTRESOURCE(OBM_OLD_DNARROW) }
-- % , OBM_OLD_RGARROW  = { MAKEINTRESOURCE(OBM_OLD_RGARROW) }
-- % , OBM_OLD_LFARROW  = { MAKEINTRESOURCE(OBM_OLD_LFARROW) }
-- % , OBM_BTSIZE       = { MAKEINTRESOURCE(OBM_BTSIZE)      }
-- % , OBM_CHECK        = { MAKEINTRESOURCE(OBM_CHECK)       }
-- % , OBM_CHECKBOXES   = { MAKEINTRESOURCE(OBM_CHECKBOXES)  }
-- % , OBM_BTNCORNERS   = { MAKEINTRESOURCE(OBM_BTNCORNERS)  }
-- % , OBM_OLD_REDUCE   = { MAKEINTRESOURCE(OBM_OLD_REDUCE)  }
-- % , OBM_OLD_ZOOM     = { MAKEINTRESOURCE(OBM_OLD_ZOOM)    }
-- % , OBM_OLD_RESTORE  = { MAKEINTRESOURCE(OBM_OLD_RESTORE) }
-- % ]

----------------------------------------------------------------
-- Raster Ops
----------------------------------------------------------------

sRCCOPY       :: RasterOp3
sRCCOPY       =  13369376
sRCPAINT      :: RasterOp3
sRCPAINT      =  15597702
sRCAND        :: RasterOp3
sRCAND        =  8913094
sRCINVERT     :: RasterOp3
sRCINVERT     =  6684742
sRCERASE      :: RasterOp3
sRCERASE      =  4457256
nOTSRCCOPY    :: RasterOp3
nOTSRCCOPY    =  3342344
nOTSRCERASE   :: RasterOp3
nOTSRCERASE   =  1114278
mERGECOPY     :: RasterOp3
mERGECOPY     =  12583114
mERGEPAINT    :: RasterOp3
mERGEPAINT    =  12255782
pATCOPY       :: RasterOp3
pATCOPY       =  15728673
pATPAINT      :: RasterOp3
pATPAINT      =  16452105
pATINVERT     :: RasterOp3
pATINVERT     =  5898313
dSTINVERT     :: RasterOp3
dSTINVERT     =  5570569
bLACKNESS     :: RasterOp3
bLACKNESS     =  66
wHITENESS     :: RasterOp3
wHITENESS     =  16711778

{-# LINE 171 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

----------------------------------------------------------------
-- BITMAP
----------------------------------------------------------------

type BITMAP =
  ( INT     -- bmType
  , INT     -- bmWidth
  , INT     -- bmHeight
  , INT     -- bmWidthBytes
  , WORD    -- bmPlanes
  , WORD    -- bmBitsPixel
  , LPVOID  -- bmBits
  )

peekBITMAP :: Ptr BITMAP -> IO BITMAP
peekBITMAP p = do
  ty     <- (\hsc_ptr -> peekByteOff hsc_ptr 0) p
{-# LINE 189 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  width  <- (\hsc_ptr -> peekByteOff hsc_ptr 4) p
{-# LINE 190 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  height <- (\hsc_ptr -> peekByteOff hsc_ptr 8) p
{-# LINE 191 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  wbytes <- (\hsc_ptr -> peekByteOff hsc_ptr 12) p
{-# LINE 192 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  planes <- (\hsc_ptr -> peekByteOff hsc_ptr 16) p
{-# LINE 193 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  pixel  <- (\hsc_ptr -> peekByteOff hsc_ptr 18) p
{-# LINE 194 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  bits   <- (\hsc_ptr -> peekByteOff hsc_ptr 24) p
{-# LINE 195 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  return (ty, width, height, wbytes, planes, pixel, bits)

pokeBITMAP :: Ptr BITMAP -> BITMAP -> IO ()
pokeBITMAP p (ty, width, height, wbytes, planes, pixel, bits) = do
  (\hsc_ptr -> pokeByteOff hsc_ptr 0)       p ty
{-# LINE 200 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  (\hsc_ptr -> pokeByteOff hsc_ptr 4)      p width
{-# LINE 201 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  (\hsc_ptr -> pokeByteOff hsc_ptr 8)     p height
{-# LINE 202 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  (\hsc_ptr -> pokeByteOff hsc_ptr 12) p wbytes
{-# LINE 203 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  (\hsc_ptr -> pokeByteOff hsc_ptr 16)     p planes
{-# LINE 204 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  (\hsc_ptr -> pokeByteOff hsc_ptr 18)  p pixel
{-# LINE 205 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  (\hsc_ptr -> pokeByteOff hsc_ptr 24)       p bits
{-# LINE 206 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

type LPBITMAP = Ptr BITMAP

setBITMAP :: LPBITMAP -> BITMAP -> IO ()
setBITMAP = pokeBITMAP

----------------------------------------------------------------
-- Misc
----------------------------------------------------------------

deleteBitmap :: HBITMAP -> IO ()
deleteBitmap bitmap =
  failIfFalse_ "DeleteBitmap" $ c_DeleteBitmap bitmap
foreign import WINDOWS_CCONV unsafe "windows.h DeleteObject"
  c_DeleteBitmap :: HBITMAP -> IO Bool

createBitmap :: INT -> INT -> UINT -> UINT -> Maybe LPVOID -> IO HBITMAP
createBitmap w h planes bits mb_color_data =
  failIfNull "CreateBitmap" $
    c_CreateBitmap w h planes bits (maybePtr mb_color_data)
foreign import WINDOWS_CCONV unsafe "windows.h CreateBitmap"
  c_CreateBitmap :: INT -> INT -> UINT -> UINT -> LPVOID -> IO HBITMAP

createBitmapIndirect :: LPBITMAP -> IO HBITMAP
createBitmapIndirect p_bm =
  failIfNull "CreateBitmapIndirect" $ c_CreateBitmapIndirect p_bm
foreign import WINDOWS_CCONV unsafe "windows.h CreateBitmapIndirect"
  c_CreateBitmapIndirect :: LPBITMAP -> IO HBITMAP

createCompatibleBitmap :: HDC -> Int32 -> Int32 -> IO HBITMAP
createCompatibleBitmap dc w h =
  failIfNull "CreateCompatibleBitmap" $ c_CreateCompatibleBitmap dc w h
foreign import WINDOWS_CCONV unsafe "windows.h CreateCompatibleBitmap"
  c_CreateCompatibleBitmap :: HDC -> Int32 -> Int32 -> IO HBITMAP

createDIBPatternBrushPt :: LPVOID -> ColorFormat -> IO HBRUSH
createDIBPatternBrushPt bm usage =
  failIfNull "CreateDIBPatternBrushPt" $ c_CreateDIBPatternBrushPt bm usage
foreign import WINDOWS_CCONV unsafe "windows.h CreateDIBPatternBrushPt"
  c_CreateDIBPatternBrushPt :: LPVOID -> ColorFormat -> IO HBRUSH

----------------------------------------------------------------
-- Querying
----------------------------------------------------------------

getBitmapDimensionEx :: HBITMAP -> IO SIZE
getBitmapDimensionEx bm =
  allocaSIZE $ \ p_size -> do
  failIfFalse_ "GetBitmapDimensionEx" $ c_GetBitmapDimensionEx bm p_size
  peekSIZE p_size
foreign import WINDOWS_CCONV unsafe "windows.h GetBitmapDimensionEx"
  c_GetBitmapDimensionEx :: HBITMAP -> Ptr SIZE -> IO Bool

setBitmapDimensionEx :: HBITMAP -> SIZE -> IO SIZE
setBitmapDimensionEx bm (cx,cy) =
  allocaSIZE $ \ p_size -> do
  failIfFalse_ "SetBitmapDimensionEx" $ do
    c_SetBitmapDimensionEx bm cx cy p_size
  peekSIZE p_size
foreign import WINDOWS_CCONV unsafe "windows.h SetBitmapDimensionEx"
  c_SetBitmapDimensionEx :: HBITMAP -> LONG -> LONG -> Ptr SIZE -> IO Bool

getBitmapInfo :: HBITMAP -> IO BITMAP
getBitmapInfo bm =
  allocaBytes (fromIntegral sizeofBITMAP) $ \ p_bm -> do
  failIfFalse_ "GetBitmapInfo" $ c_GetBitmapInfo bm sizeofBITMAP p_bm
  peekBITMAP p_bm
foreign import WINDOWS_CCONV unsafe "windows.h GetObjectW"
  c_GetBitmapInfo :: HBITMAP -> DWORD -> LPBITMAP -> IO Bool

----------------------------------------------------------------
--
----------------------------------------------------------------

type BitmapCompression = DWORD

bI_RGB        :: BitmapCompression
bI_RGB        =  0
bI_RLE8       :: BitmapCompression
bI_RLE8       =  1
bI_RLE4       :: BitmapCompression
bI_RLE4       =  2
bI_BITFIELDS  :: BitmapCompression
bI_BITFIELDS  =  3

{-# LINE 288 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

type ColorFormat = DWORD

dIB_PAL_COLORS  :: ColorFormat
dIB_PAL_COLORS  =  1
dIB_RGB_COLORS  :: ColorFormat
dIB_RGB_COLORS  =  0

{-# LINE 295 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

----------------------------------------------------------------
-- BITMAPINFO
----------------------------------------------------------------

type LPBITMAPINFO = Ptr ()

----------------------------------------------------------------
-- BITMAPINFOHEADER
----------------------------------------------------------------

type BITMAPINFOHEADER =
 ( DWORD              -- biSize      -- sizeof(BITMAPINFOHEADER)
 , LONG               -- biWidth
 , LONG               -- biHeight
 , WORD               -- biPlanes
 , WORD               -- biBitCount  -- 1, 4, 8, 16, 24 or 32
 , BitmapCompression  -- biCompression
 , DWORD              -- biSizeImage
 , LONG               -- biXPelsPerMeter
 , LONG               -- biYPelsPerMeter
 , Maybe DWORD        -- biClrUsed
 , Maybe DWORD        -- biClrImportant
 )

peekBITMAPINFOHEADER :: Ptr BITMAPINFOHEADER -> IO BITMAPINFOHEADER
peekBITMAPINFOHEADER p = do
  size     <- (\hsc_ptr -> peekByteOff hsc_ptr 0) p
{-# LINE 323 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  width    <- (\hsc_ptr -> peekByteOff hsc_ptr 4) p
{-# LINE 324 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  height   <- (\hsc_ptr -> peekByteOff hsc_ptr 8) p
{-# LINE 325 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  planes   <- (\hsc_ptr -> peekByteOff hsc_ptr 12) p
{-# LINE 326 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  nbits    <- (\hsc_ptr -> peekByteOff hsc_ptr 14) p
{-# LINE 327 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  comp     <- (\hsc_ptr -> peekByteOff hsc_ptr 16) p
{-# LINE 328 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  imsize   <- (\hsc_ptr -> peekByteOff hsc_ptr 20) p
{-# LINE 329 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  xDensity <- (\hsc_ptr -> peekByteOff hsc_ptr 24) p
{-# LINE 330 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  yDensity <- (\hsc_ptr -> peekByteOff hsc_ptr 28) p
{-# LINE 331 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  clrUsed  <- liftM numToMaybe $ (\hsc_ptr -> peekByteOff hsc_ptr 32) p
{-# LINE 332 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  clrImp   <- liftM numToMaybe $ (\hsc_ptr -> peekByteOff hsc_ptr 36) p
{-# LINE 333 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  return (size, width, height, planes, nbits, comp, imsize,
          xDensity, yDensity, clrUsed, clrImp)

type LPBITMAPINFOHEADER   = Ptr BITMAPINFOHEADER

getBITMAPINFOHEADER_ :: LPBITMAPINFOHEADER -> IO BITMAPINFOHEADER
getBITMAPINFOHEADER_ = peekBITMAPINFOHEADER

----------------------------------------------------------------
-- BITMAPFILEHEADER
----------------------------------------------------------------

type BITMAPFILEHEADER =
 ( WORD   -- bfType      -- "BM" == 0x4d42
 , DWORD  -- bfSize      -- number of bytes in file
 , WORD   -- bfReserved1 -- == 0
 , WORD   -- bfReserved2 -- == 0
 , DWORD  -- bfOffBits   -- == (char*) bits - (char*) filehdr
 )

peekBITMAPFILEHEADER :: Ptr BITMAPFILEHEADER -> IO BITMAPFILEHEADER
peekBITMAPFILEHEADER p = do
  ty     <- (\hsc_ptr -> peekByteOff hsc_ptr 0) p
{-# LINE 356 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  size   <- (\hsc_ptr -> peekByteOff hsc_ptr 2) p
{-# LINE 357 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  res1   <- (\hsc_ptr -> peekByteOff hsc_ptr 6) p
{-# LINE 358 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  res2   <- (\hsc_ptr -> peekByteOff hsc_ptr 8) p
{-# LINE 359 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  offset <- (\hsc_ptr -> peekByteOff hsc_ptr 10) p
{-# LINE 360 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
  return (ty, size, res1, res2, offset)

type LPBITMAPFILEHEADER = Ptr BITMAPFILEHEADER

getBITMAPFILEHEADER :: LPBITMAPFILEHEADER -> IO BITMAPFILEHEADER
getBITMAPFILEHEADER = peekBITMAPFILEHEADER

sizeofBITMAP             :: Word32
sizeofBITMAP             = (32)
{-# LINE 369 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
sizeofBITMAPINFO         :: Word32
sizeofBITMAPINFO         = (44)
{-# LINE 371 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
sizeofBITMAPINFOHEADER   :: Word32
sizeofBITMAPINFOHEADER   = (40)
{-# LINE 373 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
sizeofBITMAPFILEHEADER   :: Word32
sizeofBITMAPFILEHEADER   = (14)
{-# LINE 375 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}
sizeofLPBITMAPFILEHEADER :: Word32
sizeofLPBITMAPFILEHEADER = (14)
{-# LINE 377 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

----------------------------------------------------------------
-- CreateBMPFile
----------------------------------------------------------------

-- A (large) helper function - courtesy of Microsoft

createBMPFile :: String -> HBITMAP -> HDC -> IO ()
createBMPFile name bm dc =
  withCWString name $ \ c_name ->
  c_CreateBMPFile c_name bm dc
foreign import ccall unsafe "dumpBMP.h CreateBMPFile"
  c_CreateBMPFile :: LPCTSTR -> HBITMAP -> HDC -> IO ()

{-# CFILES cbits/dumpBMP.c #-}

----------------------------------------------------------------
-- Device Independent Bitmaps
----------------------------------------------------------------

cBM_INIT  :: DWORD
cBM_INIT  =  4

{-# LINE 400 "Graphics\\Win32\\GDI\\Bitmap.hsc" #-}

getDIBits :: HDC -> HBITMAP -> INT -> INT -> Maybe LPVOID -> LPBITMAPINFO -> ColorFormat -> IO INT
getDIBits dc bm start nlines mb_bits info usage =
  failIfZero "GetDIBits" $
    c_GetDIBits dc bm start nlines (maybePtr mb_bits) info usage
foreign import WINDOWS_CCONV unsafe "windows.h GetDIBits"
  c_GetDIBits :: HDC -> HBITMAP -> INT -> INT -> LPVOID -> LPBITMAPINFO -> ColorFormat -> IO INT

setDIBits :: HDC -> HBITMAP -> INT -> INT -> LPVOID -> LPBITMAPINFO -> ColorFormat -> IO INT
setDIBits dc bm start nlines bits info use =
  failIfZero "SetDIBits" $ c_SetDIBits dc bm start nlines bits info use
foreign import WINDOWS_CCONV unsafe "windows.h SetDIBits"
  c_SetDIBits :: HDC -> HBITMAP -> INT -> INT -> LPVOID -> LPBITMAPINFO -> ColorFormat -> IO INT

createDIBitmap :: HDC -> LPBITMAPINFOHEADER -> DWORD -> LPVOID -> LPBITMAPINFO -> ColorFormat -> IO HBITMAP
createDIBitmap dc hdr option init_val info usage =
  failIfNull "CreateDIBitmap" $
    c_CreateDIBitmap dc hdr option init_val info usage
foreign import WINDOWS_CCONV unsafe "windows.h CreateDIBitmap"
  c_CreateDIBitmap :: HDC -> LPBITMAPINFOHEADER -> DWORD -> LPVOID -> LPBITMAPINFO -> ColorFormat -> IO HBITMAP

----------------------------------------------------------------
-- End
----------------------------------------------------------------