@see GetPixel()
*/
- bool GetRGB(int pixel, const unsigned char* red,
- const unsigned char* green,
- const unsigned char* blue) const;
+ bool GetRGB(int pixel, unsigned char* red, unsigned char* green,
+ unsigned char* blue) const;
/**
Returns @true if palette data is present.
*/
- bool IsOk() const;
+ virtual bool IsOk() const;
/**
Assignment operator, using @ref overview_refcount.