Action generated when an element is given keyboard focus. This callback is called after the KILLFOCUS_CB of the element that lost the focus. The IupGetFocus function during the callback returns the element that lost the focus.
int function(Ihandle *ih); [in C] ih:getfocus_cb() -> (ret: number) [in Lua]
ih: identifier of the element that received keyboard focus.
All elements with user interaction, except menus.