WND_HSCROLLBAR_INDEX 2506 src/w32fns.c         SetWindowLong (hwnd, WND_HSCROLLBAR_INDEX, FRAME_SCROLL_BAR_AREA_HEIGHT (f));
WND_HSCROLLBAR_INDEX 5639 src/w32fns.c         SetWindowLong (tip_window, WND_HSCROLLBAR_INDEX, 0);
WND_HSCROLLBAR_INDEX 7273 src/w32term.c    SetWindowLong (window, WND_HSCROLLBAR_INDEX, FRAME_SCROLL_BAR_AREA_HEIGHT (f));