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1. type C_VfsFileLookupFunc = Ptr Vfs -> CString -> Ptr () -> IO Ptr File

   gi-gio	GI.Gio.Callbacks

   Type for the callback on the (unwrapped) C side.

2. type VfsFileLookupFunc = Vfs -> Text -> IO Maybe File

   gi-gio	GI.Gio.Callbacks

   This function type is used by vfsRegisterUriScheme to make it possible for a client to associate an URI scheme to a different File implementation. The client should return a reference to the new file that has been created for uri, or Nothing to continue with the default implementation. Since: 2.50

3. type VfsFileLookupFunc_WithClosures = Vfs -> Text -> Ptr () -> IO Maybe File

   gi-gio	GI.Gio.Callbacks

   This function type is used by vfsRegisterUriScheme to make it possible for a client to associate an URI scheme to a different File implementation. The client should return a reference to the new file that has been created for uri, or Nothing to continue with the default implementation. Since: 2.50

4. drop_closures_VfsFileLookupFunc :: VfsFileLookupFunc -> VfsFileLookupFunc_WithClosures

   gi-gio	GI.Gio.Callbacks

   A simple wrapper that ignores the closure arguments.

5. dynamic_VfsFileLookupFunc :: (HasCallStack, MonadIO m, IsVfs a) => FunPtr C_VfsFileLookupFunc -> a -> Text -> Ptr () -> m (Maybe File)

   gi-gio	GI.Gio.Callbacks

   Given a pointer to a foreign C function, wrap it into a function callable from Haskell.

6. genClosure_VfsFileLookupFunc :: MonadIO m => VfsFileLookupFunc -> m (GClosure C_VfsFileLookupFunc)

   gi-gio	GI.Gio.Callbacks

   Wrap the callback into a GClosure.

7. mk_VfsFileLookupFunc :: C_VfsFileLookupFunc -> IO (FunPtr C_VfsFileLookupFunc)

   gi-gio	GI.Gio.Callbacks

   Generate a function pointer callable from C code, from a C_VfsFileLookupFunc.

8. noVfsFileLookupFunc :: Maybe VfsFileLookupFunc

   gi-gio	GI.Gio.Callbacks

   A convenience synonym for Nothing :: Maybe VfsFileLookupFunc.

9. noVfsFileLookupFunc_WithClosures :: Maybe VfsFileLookupFunc_WithClosures

   gi-gio	GI.Gio.Callbacks

   A convenience synonym for Nothing :: Maybe VfsFileLookupFunc_WithClosures.

10. wrap_VfsFileLookupFunc :: Maybe (Ptr (FunPtr C_VfsFileLookupFunc)) -> VfsFileLookupFunc_WithClosures -> C_VfsFileLookupFunc

    gi-gio	GI.Gio.Callbacks

    Wrap a VfsFileLookupFunc into a C_VfsFileLookupFunc.

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