static void
-png_error_fn (png_structp png_ptr, char const * message)
+png_error_fn (png_structp, char const * message)
{
- reinterpret_cast<Image*>(png_get_error_ptr(png_ptr))->png_error (message);
-}
-
-
-void
-Image::png_error (char const * message)
-{
- throw EncodeError (String::compose ("Error during PNG write: %1", message));
+ throw EncodeError (String::compose("Error during PNG write: %1", message));
}