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virtual MusECore::Undo moveCanvasItems(CItemList&, int, int, DragType) = 0;
79
83
virtual bool moveItem(MusECore::Undo&, CItem*, const QPoint&, DragType) = 0;
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virtual void endMoveItems(const QPoint&, DragType, int dir);
86
virtual void startPlayEvent(int note, int velocity, int port, int channel);
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92
void redrawGrid() { redraw(); }