comparison base/XmlExportable.h @ 27:070e9e1e40ea

* Change SpectrogramLayer to use its own cache type instead of a QImage
* Some gcc-4.0 compile fixes

 #include <QColor>
 
 class XmlExportable
 {
 public:
+    virtual ~XmlExportable() { }
+
     virtual QString toXmlString(QString indent = "",
 				QString extraAttributes = "") const = 0;
 
     static QString encodeEntities(QString);