ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / TWAIN Component API Reference / TWAIN Component Enumerations / enumIGTWAINOverscanModes
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    enumIGTWAINOverscanModes
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    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.