OPEN_CB
Called just before a submenu is opened.
Callback
int function(Ihandle *ih); [in C] elem:open_cb() -> (ret: number) [in Lua]
Notes
Does not work for popup menus.
Called just before a submenu is opened.
int function(Ihandle *ih); [in C] elem:open_cb() -> (ret: number) [in Lua]
Does not work for popup menus.