Graphics/Win32/Window/HotKey.hsc
{-# LANGUAGE CPP #-}
{- |
Module : Graphics.Win32.Window.HotKey
Copyright : 2013 shelarcy
License : BSD-style
Maintainer : shelarcy@gmail.com
Stability : Provisional
Portability : Non-portable (Win32 API)
An FFI binding to the hot key part of the Win32 API.
-}
module Graphics.Win32.Window.HotKey where
import Data.Bits ( (.|.) )
import Graphics.Win32.GDI.Types ( HWND, MbHWND )
import Graphics.Win32.Key ( VKey )
import Graphics.Win32.Message ( WindowMessage )
import System.Win32.Types ( UINT, BOOL, maybePtr, failIfFalse_ )
import System.Win32.Exception.Unsupported ( unsupportedVal, upgradeWindowsOS )
import System.Win32.Info.Version ( is7OrLater )
#include <windows.h>
##include "windows_cconv.h"
type FsModifiers = [FsModifier]
type FsModifier = UINT
#{enum FsModifier,
, mOD_ALT = MOD_ALT
, mOD_CONTROL = MOD_CONTROL
, mOD_SHIFT = MOD_SHIFT
, mOD_WIN = MOD_WIN
}
-- | This parameter requires to use Windows 7 or later.
mOD_NOREPEAT :: FsModifier
mOD_NOREPEAT
= unsupportedVal "MOD_NOREPEAT"
is7OrLater (upgradeWindowsOS "Windows 7") 0x4000
{-
, mOD_NOREPEAT = MOD_NOREPEAT
-}
wM_HOTKEY :: WindowMessage
wM_HOTKEY = #const WM_HOTKEY
joinModifiers :: FsModifiers -> FsModifier
joinModifiers = foldr (.|.) 0
registerHotKey :: MbHWND -> Int -> FsModifier -> VKey -> IO ()
registerHotKey mb_wnd kid md vkey =
failIfFalse_ (unwords ["RegisterHotKey", show mb_wnd, show kid, show md, show vkey])
$ c_RegisterHotKey (maybePtr mb_wnd) kid md vkey
foreign import WINDOWS_CCONV "windows.h RegisterHotKey"
c_RegisterHotKey :: HWND -> Int -> UINT -> VKey -> IO BOOL
unregisterHotKey :: MbHWND -> Int -> IO ()
unregisterHotKey mb_wnd kid =
failIfFalse_ (unwords ["UnregisterHotKey", show mb_wnd, show kid])
$ c_UnregisterHotKey (maybePtr mb_wnd) kid
foreign import WINDOWS_CCONV "windows.h UnregisterHotKey"
c_UnregisterHotKey :: HWND -> Int -> IO BOOL