void gdk_window_scroll ( GdkWindow* window, gint dx, gint dy )
Scroll the contents of
window, both pixels and children, by the
window itself does not move. Portions of the window
that the scroll operation brings in from offscreen areas are
invalidated. The invalidated region may be bigger than what would
strictly be necessary.
For X11, a minimum area will be invalidated if the window has no subwindows, or if the edges of the window’s parent do not extend beyond the edges of the window. In other cases, a multi-step process is used to scroll the window which may produce temporary visual artifacts and unnecessary invalidations.