This enumeration determines the over-scanning mode.
Values:
| IG_TW_OV_ALL | Overscan all. |
| IG_TW_OV_AUTO | Auto mode. |
| IG_TW_OV_LEFTRIGHT | Left-Right mode. |
| IG_TW_OV_NONE | None. |
| IG_TW_OV_TOPBOTTOM | Top-Bottom mode. |
| ImageGear Professional DLL v17.1 for Windows |  |
| enumIGTWAINOverscanModes | |
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| ImageGear Professional DLL v17.1 for Windows > API Reference Guide > TWAIN Component API Reference > TWAIN Component Enumerations > enumIGTWAINOverscanModes |