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package javax.sound.midi;

import java.util.EventListener;

The ControllerEventListener interface should be implemented by classes whose instances need to be notified when a Sequencer has processed a requested type of MIDI control-change event. To register a ControllerEventListener object to receive such notifications, invoke the addControllerEventListener method of Sequencer, specifying the types of MIDI controllers about which you are interested in getting control-change notifications.
Author:Kara Kytle
See Also:
/** * The {@code ControllerEventListener} interface should be implemented by * classes whose instances need to be notified when a {@link Sequencer} has * processed a requested type of MIDI control-change event. To register a * {@code ControllerEventListener} object to receive such notifications, invoke * the * {@link Sequencer#addControllerEventListener(ControllerEventListener, int[]) * addControllerEventListener} method of {@code Sequencer}, specifying the types * of MIDI controllers about which you are interested in getting control-change * notifications. * * @author Kara Kytle * @see MidiChannel#controlChange(int, int) */
public interface ControllerEventListener extends EventListener {
Invoked when a Sequencer has encountered and processed a control-change event of interest to this listener. The event passed in is a ShortMessage whose first data byte indicates the controller number and whose second data byte is the value to which the controller was set.
Params:
  • event – the control-change event that the sequencer encountered in the sequence it is processing
See Also:
/** * Invoked when a {@link Sequencer} has encountered and processed a * control-change event of interest to this listener. The event passed in is * a {@code ShortMessage} whose first data byte indicates the controller * number and whose second data byte is the value to which the controller * was set. * * @param event the control-change event that the sequencer encountered in * the sequence it is processing * @see Sequencer#addControllerEventListener(ControllerEventListener, int[]) * @see MidiChannel#controlChange(int, int) * @see ShortMessage#getData1 * @see ShortMessage#getData2 */
void controlChange(ShortMessage event); }