ArdourCanvas::Color color (const std::string&, bool* failed = 0) const;
ArdourCanvas::HSV color_hsv (const std::string&) const;
- ArdourCanvas::SVAModifier modifier (const std::string&);
+ ArdourCanvas::SVAModifier modifier (const std::string&) const;
sigc::signal<void,std::string> ParameterChanged;
void map_parameters (boost::function<void (std::string)>&);