Called right after an element is mapped and its attributes updated in IupMap.
When the element is a dialog, it is called after the layout is updated. For all other elements is called before the layout is updated, so the element current size will still be 0x0 during MAP_CB (since 3.14).
int function(Ihandle *ih); [in C] ih:map_cb() -> (ret: number) [in Lua]
ih: identifier of the element that activated the event.
All that have a native representation.