GI.GdkPixbuf.Callbacks

Signals

PixbufDestroyNotify

type C_PixbufDestroyNotify = Ptr Word8 -> Ptr () -> IO ()

type PixbufDestroyNotify = Ptr Word8 -> IO ()

type PixbufDestroyNotify_WithClosures = Ptr Word8 -> Ptr () -> IO ()

drop_closures_PixbufDestroyNotify :: PixbufDestroyNotify -> PixbufDestroyNotify_WithClosures

dynamic_PixbufDestroyNotify

Arguments

:: (HasCallStack, MonadIO m)

=> FunPtr C_PixbufDestroyNotify

-> Ptr Word8

pixels: The pixel array of the pixbuf that is being finalized.

-> Ptr ()

data: User closure data.

-> m ()

genClosure_PixbufDestroyNotify :: PixbufDestroyNotify -> IO Closure

mk_PixbufDestroyNotify :: C_PixbufDestroyNotify -> IO (FunPtr C_PixbufDestroyNotify)

noPixbufDestroyNotify :: Maybe PixbufDestroyNotify

noPixbufDestroyNotify_WithClosures :: Maybe PixbufDestroyNotify_WithClosures

wrap_PixbufDestroyNotify :: Maybe (Ptr (FunPtr C_PixbufDestroyNotify)) -> PixbufDestroyNotify_WithClosures -> Ptr Word8 -> Ptr () -> IO ()

PixbufSaveFunc

type C_PixbufSaveFunc = Ptr Word8 -> Word64 -> Ptr (Ptr GError) -> Ptr () -> IO CInt

type PixbufSaveFunc = ByteString -> IO (Bool, GError)

type PixbufSaveFunc_WithClosures = ByteString -> Ptr () -> IO (Bool, GError)

drop_closures_PixbufSaveFunc :: PixbufSaveFunc -> PixbufSaveFunc_WithClosures

dynamic_PixbufSaveFunc

Arguments

:: (HasCallStack, MonadIO m)

=> FunPtr C_PixbufSaveFunc

-> ByteString

buf: bytes to be written.

-> Ptr ()

data: user data passed to gdk_pixbuf_save_to_callback().

-> m (Bool, GError)

Returns: True if successful, False (with error set) if failed.

genClosure_PixbufSaveFunc :: PixbufSaveFunc -> IO Closure

mk_PixbufSaveFunc :: C_PixbufSaveFunc -> IO (FunPtr C_PixbufSaveFunc)

noPixbufSaveFunc :: Maybe PixbufSaveFunc

noPixbufSaveFunc_WithClosures :: Maybe PixbufSaveFunc_WithClosures

wrap_PixbufSaveFunc :: Maybe (Ptr (FunPtr C_PixbufSaveFunc)) -> PixbufSaveFunc_WithClosures -> Ptr Word8 -> Word64 -> Ptr (Ptr GError) -> Ptr () -> IO CInt