This enumeration specifies contrast adjustment modes.
Values:
| IG_CONTRAST_PALETTE | Alter image palette. |
| IG_CONTRAST_PIXEL | Alter image pixels. |
| IG_CONTRAST_AUTO | If the image is indexed, alter palette, otherwise alter pixels. |
| ImageGear Professional DLL v17.1 for Windows |  |
| enumIGContrastModes | |
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| ImageGear Professional DLL v17.1 for Windows > API Reference Guide > Core Component API Reference > Core Component Enumerations Reference > enumIGContrastModes |