ButtonRegionFor  2202 src/haiku_support.cc 	if (ButtonRegionFor (current_part).Contains (point))
ButtonRegionFor  2346 src/haiku_support.cc 	r = ButtonRegionFor (HAIKU_SCROLL_BAR_UP_BUTTON);
ButtonRegionFor  2360 src/haiku_support.cc 	r = ButtonRegionFor (HAIKU_SCROLL_BAR_DOWN_BUTTON);