AutoChangeMusic - LilyPond program-reference
Description: LilyPond program-reference

Next: BarCheck, Previous: ArticulationEvent, Up: Music expressions

#### AutoChangeMusic

Used for making voices that switch between piano staves automatically.

Properties:

`name` (symbol):
  `'AutoChangeMusic`

  Name of this music object

`iterator-ctor` (procedure):
  `ly:auto-change-iterator::constructor`

  Function to construct music-event-iterator object for this Music

`start-callback` (procedure):
  `ly:music-wrapper::start-callback`

  Function to compute the negative length of starting grace notes. This property can only be defined as initializer in `define-music-types.scm`.

`length-callback` (procedure):
  `ly:music-wrapper::length-callback`

  How to compute the duration of this music. This property can only be defined as initializer in `define-music-types.scm`.

`types` (list):
  `'(general-music music-wrapper-music auto-change-instruction)`

  The types of this music object; determines by what engraver this music expression is processed.

Next: BarCheck, Previous: ArticulationEvent, Up: Music expressions

This page is for LilyPond-2.10.33 (stable-branch).