[CM] How to fix: no such class MIDIMSG

[andersvi@extern.uio.no]

According to CM's change-log, the midimsg was replaced by several
specialized messages-classes some time ago.

Try replacing with (new midi-pitch-bend :channel c :bend 0)

Youll find the changes in cm/doc/changelog.text.

o New highlevel MIDI event classes replace the MIDIMSG class for
  generating events to MIDI files MidiShare streams
  1. Channel Messages classes:
       midi
       midi-note-on
       midi-note-off
       midi-key-pressure
       midi-control-change
       midi-program-change
       midi-channel-pressure
       midi-pitch-bend
  2. System Messages classes:
       midi-system-event
  3. MIDI File Meta Message classes:
       midi-sequence-number
       midi-text-event
       midi-eot
       midi-tempo-change
       midi-smpte-offset
       midi-time-signature
       midi-key-signature
       midi-sequence-event



>>> "ES" == Emre Sevinc <emres@bilgi.edu.tr> writes:
ES> 
ES> Hi all,
ES> I'm studying Ch. 15 of the book Notes from the Metalevel
ES> and after successfuly listening to harmonic series
ES> I was stuck at Ex. 2, clearbends:
ES> (define (clearbends)
ES>   (process for c below 16
ES>            output (new midimsg
ES>                     :time (now)
ES>                     :msg (make-pitch-bend c 0))))
ES> ; in: DEFINE (CLEARBENDS)
ES> ;     (CM:NEW CM::MIDIMSG :TIME (CM:NOW) :MSG (CM::MAKE-PITCH-BEND CM::C 0))
ES> ;
ES> ; caught ERROR:
ES> ;   (in macroexpansion of (NEW MIDIMSG :TIME ...))
ES> ;   (hint: For more precise location, try *BREAK-ON-SIGNALS*.)
ES> ;   There is no class named MIDIMSG.
ES> What does that mean? Is midimsg a deprecated class? Is there
ES> some similar class with a different name?
ES> I'll be glad if somebody can help me.
ES> Happy musical hacking,
ES> Emre S.
ES> 
-- 
William Congreve: Music has charms to soothe the savage beast,
to soften rocks or bend a knotted oak.