Merge branch 'audiomsg_overhaul' (nonshared eventlists and more)

This introduces the following changes:
 - Clone Parts no more share their eventlist. Instead, all changes
   made to one clone are replicated to the other clones' eventlists
 - audio/song->msg{Add,Delete,Change}{Part,Event,Track} have been
   replaced by the corresponding UndoOp operations.
 - Enforcing of const-correctness: No GUI code may ever gain
   writable access to audio/midi/song data structures. Access
   must *always* go through applyOperationGroup. This is now
   enforced.
 - Removed a bunch of DELETETHIS or REMOVE or otherwise commented
   out code
 - Removed dead code
 - Removed unused Audio Messages (that should go through applyOpGroup
   anyway.)

1 files changed, 3 insertions, 3 deletions

diff --git a/muse2/muse/midiedit/dcanvas.h b/muse2/muse/midiedit/dcanvas.h
index 1a1ee546..300f2291 100644
--- a/muse2/muse/midiedit/dcanvas.h
+++ b/muse2/muse/midiedit/dcanvas.h
@@ -130,7 +130,7 @@ class DrumCanvas : public EventCanvas {
       void dragEnterEvent(QDragEnterEvent* event);
       void dragMoveEvent(QDragMoveEvent*);
       void dragLeaveEvent(QDragLeaveEvent*);
-      virtual CItem* addItem(MusECore::Part*, MusECore::Event&);
+      virtual CItem* addItem(MusECore::Part*, const MusECore::Event&);
       virtual void resizeEvent(QResizeEvent*);
       virtual void curPartChanged();
       int getNextStep(unsigned int pos, int basicStep, int stepSize=1);
@@ -167,8 +167,8 @@ class DrumCanvas : public EventCanvas {
       virtual void modifySelected(NoteInfo::ValType type, int val, bool delta_mode = true);
       virtual void keyPress(QKeyEvent* event);
       virtual void keyRelease(QKeyEvent* event);
-      MusECore::Event *getEventAtCursorPos();
-      void selectCursorEvent(MusECore::Event *ev);
+      const MusECore::Event* getEventAtCursorPos();
+      void selectCursorEvent(const MusECore::Event* ev);
 
       int pitch_and_track_to_instrument(int pitch, MusECore::Track* track);