ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / TWAIN Component API Reference / TWAIN Component Enumerations / enumIGTWAINDuplex
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    enumIGTWAINDuplex
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    This enumeration determines whether the scanner supports duplex.

    Values:

    IG_TW_DX_1PASSDUPLEX One duplex is supported.
    IG_TW_DX_2PASSDUPLEX Two duplex is supported.
    IG_TW_DX_NONE No duplex support.

     

     

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