HelenOS sources

ui_menu_dd_left    51 uspace/lib/ui/src/menudd.c static void ui_menu_dd_left(ui_menu_t *, void *, sysarg_t);
ui_menu_dd_left    57 uspace/lib/ui/src/menudd.c 	.left = ui_menu_dd_left,
HelenOS homepage, sources at GitHub