class KActionCollection;
class AudioSignal;
class AudioSpectrum;
+class Spectrogram;
class MainWindow : public KXmlGuiWindow
{
QDockWidget *m_audioSpectrumDock;
AudioSpectrum *m_audioSpectrum;
+ QDockWidget *m_spectrogramDock;
+ Spectrogram *m_spectrogram;
+
QDockWidget *m_undoViewDock;
QUndoView *m_undoView;
QUndoGroup *m_commandStack;