comparison layer/SpectrogramLayer.h @ 316:c0b9eec70639

* Make XmlExportable::toXml the function that is universally overridden (and
  pure virtual) instead of toXmlString.  Tidies up some classes, notably the
  model classes, significantly.  Closes #1794561.

 
     virtual bool setDisplayExtents(float min, float max);
 
     virtual bool getYScaleValue(const View *, int, float &, QString &) const;
 
-    virtual QString toXmlString(QString indent = "",
-				QString extraAttributes = "") const;
+    virtual void toXml(QTextStream &stream, QString indent = "",
+                       QString extraAttributes = "") const;
 
     void setProperties(const QXmlAttributes &attributes);
 
     virtual void setLayerDormant(const View *v, bool dormant);