HelenOS sources

ui_scrollbar_btn_len_text  383 uspace/lib/ui/src/scrollbar.c 	len = resource->textmode ? ui_scrollbar_btn_len_text :
ui_scrollbar_btn_len_text  627 uspace/lib/ui/src/scrollbar.c 		btn_len = ui_scrollbar_btn_len_text;
HelenOS homepage, sources at GitHub