Am 02.09.18 um 10:10 schrieb [email protected]:
Hi everyone,
i want to increase the current bar number by a fixed number of steps at
a certain point in my sheet music.
To do this, I modify Score.currentBarNumber. My approach for increasing
the bar number by 4 steps would be:
\set Score.currentBarNumber = #(+ Score.currentBarNumber 4)
This does not work however, as GUILE says that currentBarNumber has the
value #<unspecified>. So I guess I do not access the currentBarNumber
variable in the right way.
But how do I access it in this context?
You have to get the Score context somehow. This can be done by using
\applyContext. I don’t know what context the procedure then is called
with (maybe the current Bottom?) but you can find the Score context from
there and then get and set the currentBarNumber:
\version "2.18.2"
{
\override Score.BarNumber.break-visibility = #all-visible
R1*3
\applyContext
#(lambda (context)
(let* ((myscore (ly:context-find context 'Score))
(curnum (ly:context-property myscore 'currentBarNumber))
(newnum (+ curnum 4)))
(ly:context-set-property! myscore 'currentBarNumber newnum)))
R
}
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