/** * <summary> * Smoothly changes the brightness of the screen to produce a fade-in or fade-out * effect. * <para> * </para> * </summary> * <param name="brightness"> * the new screen brightness * </param> * <param name="duration"> * duration of the brightness transition, in milliseconds. * </param> * <returns> * <c>0</c> if the call succeeds. * </returns> * <para> * On failure, throws an exception or returns a negative error code. * </para> */ public virtual int fade(int brightness, int duration) { if (_func == null) { throw new YoctoApiProxyException("No Display connected"); } return(_func.fade(brightness, duration)); }