GTK_UPDATE_CONTINUOUS - signals are sent continuously as the color
selection changes.
GTK_UPDATE_DISCONTINUOUS - signals are sent only when the mouse
button is released.
GTK_UPDATE_DELAYED - signals are sent when the mouse button is
released or when the mouse has been motionless for a period of
time.
WARNING: gtk_color_selection_set_update_policy is deprecated and should not be used in newly-written code.
gtkColorSelectionSetUpdatePolicy(object, policy)objectpolicyGtkUpdateType value indicating the desired policy.