ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / TWAIN Component API Reference / TWAIN Component Enumerations / enumIGTWAINFlashUsed
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    enumIGTWAINFlashUsed
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    This enumeration determines which flash the image was acquired to use.

    Values:

    IG_TW_FL_AUTO Auto flash.
    IG_TW_FL_NONE No flash.
    IG_TW_FL_OFF Flash is off.
    IG_TW_FL_ON Flash is on.
    IG_TW_FL_REDEYE Redeye flash.