Identifies dithering modes and flags.
| IG_DSPL_DITHER_AUTO | Destination device color resolution should be used for dithering. In this mode ImageGear automatically applies dithering only when it is necessary. |
| IG_DSPL_DITHER_TO_8BPP | Forces ImageGear to assume that the output device is 8 bits per pixel and perform the necessary dithering. |
| IG_DSPL_DITHER_TO_4BPP | Forces ImageGear to assume that the output device is 4 bits per pixel and perform the necessary dithering. |
| IG_DSPL_DITHER_TO_1BPP | Forces ImageGear to assume that the output device is 1 bit per pixel and perform the necessary dithering. |
| IG_DSPL_DITHER_NONE | Disables ImageGear's dithering. In this mode dithering is performed by the operating system or the device driver. |
| IG_DSPL_DITHER_MODE | Bit mask for dithering modes. |
| IG_DSPL_DITHER_FIXED_PALETTE | Dithering flag. ImageGear will try to use the standard palette when performing dithering. This may be useful if the output device contains more than one image and by using this flag it is possible to draw images with the same palette. |
| IG_DSPL_DITHER_NETSCAPE_PALETTE | Dithering flag. Applicable only if the output device is 8 bits per pixel. It directs ImageGear to use the 216 entries of Netscape palette. |