MidiGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos);
MidiGhostRegion(MidiStreamView& msv, TimeAxisView& source_tv, double initial_unit_pos);
MidiGhostRegion(TimeAxisView& tv, TimeAxisView& source_tv, double initial_unit_pos);
MidiGhostRegion(MidiStreamView& msv, TimeAxisView& source_tv, double initial_unit_pos);