CGLPBufferObj = Opaque("CGLPBufferObj")
CGLShareGroup = Opaque("CGLShareGroup")
CGLShareGroupObj = Opaque("CGLShareGroupObj")
-CGSConnectionID = Alias("CGSConnectionID", Int)
+CGSConnectionID = Opaque("CGSConnectionID")
CGSWindowID = Alias("CGSWindowID", Int)
CGSSurfaceID = Alias("CGSSurfaceID", Int)