gtk2hsContentsIndex
General
Description

TODO

  • quitAddDestroy, quitAdd, quitRemove, inputAdd, inputRemove
Synopsis
initGUI :: IO [String]
eventsPending :: IO Int
mainGUI :: IO ()
mainLevel :: IO Int
mainQuit :: IO ()
mainIteration :: IO Bool
mainIterationDo :: Bool -> IO Bool
grabAdd :: WidgetClass wd => wd -> IO ()
grabGetCurrent :: IO (Maybe Widget)
grabRemove :: WidgetClass w => w -> IO ()
mkDestructor :: IO () -> IO DestroyNotify
type DestroyNotify = FunPtr (Ptr () -> IO ())
priorityLow :: Int
priorityDefault :: Int
priorityHigh :: Int
timeoutAdd :: IO Bool -> Int -> IO HandlerId
timeoutRemove :: HandlerId -> IO ()
idleAdd :: IO Bool -> Int -> IO HandlerId
idleRemove :: HandlerId -> IO ()
type HandlerId = CUInt
Documentation
initGUI :: IO [String]

Initialize the GUI binding.

  • This function initialized the GUI toolkit and parses all Gtk specific arguments. The remaining arguments are returned. If the initialization of the toolkit fails for whatever reason, an exception is thrown.
  • Throws: ErrorCall Cannot initialize GUI.
eventsPending :: IO Int
Inquire the number of events pending on the event queue
mainGUI :: IO ()
Run GTK+'s main event loop.
mainLevel :: IO Int

Inquire the main loop level.

  • Callbacks that take more time to process can call loopIteration to keep the GUI responsive. Each time the main loop is restarted this way, the main loop counter is increased. This function returns this counter.
mainQuit :: IO ()
Exit the main event loop.
mainIteration :: IO Bool

Process an event, block if necessary.

  • Returns True if the loopQuit was called while processing the event.
mainIterationDo :: Bool -> IO Bool

Process a single event.

  • Called with True, this function behaves as loopIteration in that it waits until an event is available for processing. The function will return immediately, if passed False.
  • Returns True if the loopQuit was called while processing the event.
grabAdd :: WidgetClass wd => wd -> IO ()
add a grab widget
grabGetCurrent :: IO (Maybe Widget)
inquire current grab widget
grabRemove :: WidgetClass w => w -> IO ()
remove a grab widget
mkDestructor :: IO () -> IO DestroyNotify
type DestroyNotify = FunPtr (Ptr () -> IO ())
priorityLow :: Int
priorityDefault :: Int
priorityHigh :: Int
For installing idle callbacks: Priorities.
timeoutAdd :: IO Bool -> Int -> IO HandlerId

Register a function that is to be called after interval ms have been elapsed.

  • If the function returns False it will be removed.
timeoutRemove :: HandlerId -> IO ()
Remove a previously added timeout handler by its TimeoutId.
idleAdd :: IO Bool -> Int -> IO HandlerId

Add a callback that is called whenever the system is idle.

  • A priority can be specified via an integer. This should usually be priorityDefault.
  • If the function returns False it will be removed.
idleRemove :: HandlerId -> IO ()
Remove a previously added idle handler by its TimeoutId.
type HandlerId = CUInt
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