1.1.8 AutoChangeMusic

Used for making voices that switch between piano staves automatically.

Properties:

iterator-ctor (procedure):

ly:auto-change-iterator::constructor

Function to construct a music-event-iterator object for this music.

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 ‘scm/define-music-types.scm’.

name (symbol):

'AutoChangeMusic

Name of this music object.

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 ‘scm/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.


Internals Reference v2.19.14 (development-branch).