IntelOrca/OpenRCT2 — pull request #204 by AngeloG (2014-07-11 12:42:13+00:00)
Title: Implemented scrollbar buttons left, right, up, down

input_hscrollbar_leftbutton, input_hscrollbar_rightbutton,
input_vscrollbar_topbutton, input_vscrollbar_bottombutton