Re: disabling point-and-click for displayed chords?

[Adam Spiers]

On Tue, Jan 15, 2013 at 9:41 AM, David Kastrup <address@hidden> wrote:
> Adam Spiers <address@hidden> writes:
>
>> Hi all,
>>
>> I need to generate point-and-click links for notes but not for
>> displayed chord names.  However, \pointAndClickTypes only filters by
>> music event class, and if my understanding is correct, events in a
>> certain music class have no notion of which context they are being
>> applied in, and so this filter cannot distinguish between a note-event
>> in a Voice context and a note-event in a ChordNames context.
>
> Also, this filter is global.

Yeah, I spotted that, but I figured that even a global variable
can change state during execution so it was worth a try ...

>> Am I correct, and if so, is there any workaround?  I naively tried:
>>
>>     \score {
>>       <<
>>         \pointAndClickTypes #'()
>>         \allchords
>>         \pointAndClickTypes #'(note-event)
>>         \new Staff {
>>           \allnotes
>>         }
>>       >>
>>       ...
>>     }
>>
>> but it still created point-and-click annotations for everything.
>
> You could use an engraver in ChordNames for wiping out the (event) cause
> of the last involved grob.  Then the point-and-click location would no
> longer be available...

That makes sense.  Do you mean an existing engraver though, or a new
one?  The only existing one which looks promising is
Output_property_engraver (which I had never heard of before).  Does
that mean I do this via \applyOutput?

Thanks!