ACTION
Action generated when the element is activated. Affects each element differently.
Callback
int function(Ihandle *self); [in C] elem:action() -> (ret: number) [in IupLua]self: identifier of the element that activated the function.
In some elements, this callback may receive more parameters, apart from self. Please refer to each element's documentation.
Affects
IupButton, IupItem, IupList, IupText, IupCanvas, IupMultiline, IupToggle