Identifies internal image storage formats used by ImageGear.
| IG_BI_RGB | RGB uncompressed image. |
| IG_BI_BITFIELDS | This value has been deprecated and will be removed from the public API in a future release. |
| IG_BI_RLE | RLE compressed 1-bit image. |
| IG_BI_CMYK | CMYK uncompressed image. |
| IG_BI_ABIC | This value has been deprecated and will be removed from the public API in a future release. |
| IG_BI_GRAYSCALE | 9-16 bit grayscale uncompressed image. |
| IG_BI_PSEUDOCOLOR | This value has been deprecated and will be removed from the public API in a future release. |
| IG_BI_EMPTY | DIB image data has not been allocated. |
| IG_BI_EXT | This value is used when converting HIGDIBINFO handle to the legacy AT_DIB structure, and specifies that the DIB has some features which AT_DIB does not support. |
Please see IG_image_compression_type_get for more information.