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The user can set the duplex option to be TRUE or FALSE. If TRUE, the scanner scans both sides of a paper; otherwise, the scanner will scan only one side of the image.
The Application should send MSG_GET or MSG_GETCURRENT to determine if the duplex option is enabled or not.
Source should return TRUE or FALSE based on the level of duplex support; otherwise, return TWRC_FAILURE / TWCC_CAPUNSUPPORTED.
Type: TW_BOOL
Value after MSG_OPENDS: (may be remembered from a previous session)
After MSG_RESET/MSG_RESETALL: (selected by the data source writer)
Allowed Values: TRUE or FALSE
MSG_GET TW_ONEVALUE TW_ENUMERATION // 2.0 and higher
MSG_GETCURRENT TW_ONEVALUE
MSG_GETDEFAULT TW_ONEVALUE
MSG_SET TW_ONEVALUE
MSG_SETCONSTRAINT TW_ONEVALUE TW_ENUMERATION // 2.0 and higher
MSG_RESET TW_ONEVALUE
MSG_QUERYSUPPORT TW_ONEVALUE
All Sources that support Duplex scanning.
Version 1.7
Where would you like to scan from? Scan in Web Apps Scan in Java Scan in .NET
The TWAIN Toolkit is distributed as is. The developer and distributors of the TWAIN Toolkit expressly disclaim all implied, express or statutory warranties including, without limitation, the implied warranties of merchantability, noninfringement of third party rights and fitness for a particular purpose. Neither the developers nor the distributors will be liable for damages, whether direct, indirect, special, incidental, or consequential, as a result of the reproduction, modification, distribution or other use of the TWAIN Toolkit.
