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.
GDK_RGB_DITHER_NONE
Never use dithering.
GDK_RGB_DITHER_NORMAL
Use dithering in 8 bits per pixel (and below)
only.
GDK_RGB_DITHER_MAX
Use dithering in 16 bits per pixel and below.
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. GDK_RGB_DITHER_NONE Never use dithering. GDK_RGB_DITHER_NORMAL Use dithering in 8 bits per pixel (and below) only. GDK_RGB_DITHER_MAX Use dithering in 16 bits per pixel and below.