Safe Haskell	None

Ui.PtrMap

Contents

error
views

Description

This holds the view_id_to_ptr global variable. Only very low level modules should import this.

Synopsis

newtype FltkException = FltkException String
throw :: String -> IO a
data CView
modify :: (Map ViewId (Ptr CView) -> IO (Map ViewId (Ptr CView))) -> IO ()
get_map :: IO (Map ViewId (Ptr CView))
get :: ViewId -> IO (Ptr CView)
lookup :: ViewId -> IO (Maybe.Maybe (Ptr CView))
lookup_id :: Ptr CView -> IO (Maybe.Maybe ViewId)
view_exists :: ViewId -> IO Bool

error

newtype FltkException Source #

Constructors

FltkException String

Instances

Show FltkException #
Instance details Defined in Ui.PtrMap Methods showsPrec :: Int -> FltkException -> ShowS # show :: FltkException -> String # showList :: [FltkException] -> ShowS #
Exception FltkException #
Instance details Defined in Ui.PtrMap Methods toException :: FltkException -> SomeException # fromException :: SomeException -> Maybe.Maybe FltkException # displayException :: FltkException -> String #

throw :: String -> IO a Source #

views

data CView Source #

Phantom type for block view ptrs.

modify :: (Map ViewId (Ptr CView) -> IO (Map ViewId (Ptr CView))) -> IO () Source #

get_map :: IO (Map ViewId (Ptr CView)) Source #

get :: ViewId -> IO (Ptr CView) Source #

lookup :: ViewId -> IO (Maybe.Maybe (Ptr CView)) Source #

lookup_id :: Ptr CView -> IO (Maybe.Maybe ViewId) Source #

Nothing indicates that the UI returned a view ptr I didn't know I had. It's rare, but it can happen if I close a window but a msg about it is still in the queue.

view_exists :: ViewId -> IO Bool Source #