Urs Liska <u...@openlilylib.org> writes: > Am 18.01.2016 um 11:31 schrieb Urs Liska: >> I have created a new boolean context property by >> - adding an entry in define-context-properties.scm >> - setting the default in engraver-init.ly >> - retrieving it in a class's (Beaming_option) from_context method >> >> However, I would like to add another context property (and modify the >> added one) from boolean to accepting one out of a list of symbols. >> Skimming the source code I couldn't really find how I achieve that. >> >> I assume that I have to define a custom predicate for my property that >> throws an (which?) error the argument is not in the list of accepted >> symbols. >> Is that right? And if so, where should I define that? > > I have now managed to handle what I need by adding a Scheme predicate > and a C++ enum. > > However, I am quite sure that they are not implemented at appropriate > locations: > > The Scheme predicate at the top of define-context-properties.scm > The C++ enum directly in the .hh file where it is used. > > Where should I put them?
Where the rest are. I think generally they are to be found in c++.scm and described in lily.scm. One note: #f is always allowed as a value for properties. It's just #t that would require special permission from the predicate. -- David Kastrup _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-devel
