HelenOS sources

ui_scrollbar_down_btn_up  104 uspace/lib/ui/src/scrollbar.c static void ui_scrollbar_down_btn_up(ui_pbutton_t *, void *);
ui_scrollbar_down_btn_up  120 uspace/lib/ui/src/scrollbar.c 	.up = ui_scrollbar_down_btn_up
HelenOS homepage, sources at GitHub