Re: Event listener to extract (some) music events. (issue4373046)

[Neil Puttock]

On 18 April 2011 15:30,  <address@hidden> wrote:
> On 2011/04/18 14:09:52, hanwenn wrote:

>> In that case, it would probably be cleaner to
>> hook into the event listener framework directly, without having an
>> engraver in between.  The Scheme engraver mechanism is really for
>> creating formatted output rather than siphoning off data.
>
> I have no clue how to do this?  Is this simple to do with a .ly file?  I
> definitely don't want to mess with C++ code or SCM files.

You don't have to do that; there are exported functions which provide
all the hooks.

Here's an example which generates an ambitus markup:

http://lists.gnu.org/archive/html/lilypond-user/2010-02/msg00688.html

Cheers,
Neil