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Allows an application to request the delivery of thumbnail representations for the set of images that are to be delivered.
Setting CAP_THUMBNAILSENABLED to TRUE turns on thumbnail mode. Images transferred thereafter will be sent at thumbnail size (exact thumbnail size is determined by the Data Source). Setting this capability to FALSE turns thumbnail mode off and returns full size images.
A successful set of this capability to TRUE will cause the Source to deliver image thumbnails during normal data transfer operations. This mode remains in effect until this capability is set back to FALSE.
A successful set of this capability to TRUE should enable the delivery of thumbnail images during normal data transfer. Setting this capability to FALSE will disable thumbnail delivery.
If not supported, return TWRC_FAILURE/ TWCC_CAPUNSUPPORTED.
Type: TW_BOOL
Value after MSG_OPENDS: FALSE
After MSG_RESET/MSG_RESETALL: FALSE
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
MSG_RESET TW_ONEVALUE
MSG_QUERYSUPPORT TW_ONEVALUE
All Image Store Data Sources.
Version 1.7
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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.
