ImageGear for C and C++ on Windows v19.1 - Updated
enumIGTWAINOverscanModes
API Reference Guide > TWAIN Component API Reference > TWAIN Component Enumerations > enumIGTWAINOverscanModes

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.