RefreshLayer(id)
id. This is normally not
needed because Hollywood will refresh layers automatically whenever it is needed. There
is one exception, though: Due to performance reasons, merged layers created using MergeLayers()
won't be refreshed automatically when the graphics of one of their source layers change.
Thus, you must manually tell merged layers to refresh by calling RefreshLayer() on them
whenever you want them to refresh their graphics and that's the reason why this function
exists.
You need to enable layers before you can use this function. See Layers introduction for details.