SCROLL_HORIZONTAL
| SCROLL_HORIZONTAL | SCROLL_VISIBLE_RECT_IS_CHILD_BOUNDS,
if (fScrollingFlags & (SCROLL_HORIZONTAL | SCROLL_HORIZONTAL_MAGIC)) {
if (flags & SCROLL_HORIZONTAL && !fHVisible)
changed |= SCROLL_HORIZONTAL;
changed |= SCROLL_HORIZONTAL;
changed |= SCROLL_HORIZONTAL;
changed |= SCROLL_HORIZONTAL;