Hi

I have these files in my project:

/home/myproj/lib/myPlugin.h

Qt Code: 
  1. class MYPROJ_EXPORT myPlugin : public QObject
  2. {
  3.     Q_OBJECT
  4.  
  5.  public:
  6.     virtual ~myPlugin();
  7.     virtual myPlugin * newInstance() const = 0;
  8.     virtual qreal speed() const;
  9.     virtual qreal direction() const;
  10.  
  11.  protected:
  12.     myPlugin();
  13.  
  14.  private:
  15.     Q_DISABLE_COPY( myPlugin )
  16. };
  17.  
  18. }
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/home/myproj/lib/myPlugin.cpp

Qt Code: 
  1. #include "PositionProviderPlugin.h"
  2.  
  3.  
  4.  
  5. myProj::myPlugin::myPlugin()
  6. {
  7. }
  8.  
  9. myProj::myPlugin::~myPlugin()
  10. {
  11. }
  12.  
  13. qreal myProj::myPlugin::speed()
  14. {
  15. }
  16.  
  17. qreal myProj::myPlugin::direction()
  18. {
  19. }
  20. #include "myPlugin.moc"
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When I compile I get this error:

error: prototype for ‘qreal myProj::myPlugin::speed()’ does not match any in class ‘myProj::PositionProviderPlugin’
error: candidate is: virtual qreal myProj::myPlugin::speed() const

error: prototype for ‘qreal myProj::myPlugin::direction()’ does not match any in class ‘my::PositionProviderPlugin’
error: candidate is: virtual qreal myProj::myPlugin::direction() const

How can I correct this ?