Selects whether or not GdkRGB applies dithering to the image on display. Since GdkRGB currently only handles images with 8 bits per component, dithering on 24 bit per pixel displays is a moot point.
Value | Symbolic name | Description |
| 0 | Gdk::RGB_DITHER_NONE | Never use dithering. |
| 1 | Gdk::RGB_DITHER_NORMAL | Use dithering in 8 bits per pixel (and below) only. |
| 2 | Gdk::RGB_DITHER_MAX | Use dithering in 16 bits per pixel and below. |