SHOW_CB
Called right after the dialog is opened, minimized or restored from a minimization.
Callback
int function(Ihandle *ih, int state); [in C] elem:show_cb(state: number) -> (ret: number) [in Lua]
Parameter state indicates which of the following situations generated the event:
IUP_HIDE, IUP_SHOW, IUP_RESTORE (was minimized or maximized), IUP_MINIMIZE or IUP_MAXIMIZE.
IUP_MAXIMIZE is not received in Motif when activated from the maximize button.