CAP_AUTOMATICSENSEMEDIUM

Description

Configures a Source to check for paper in the Automatic Document Feeder, and if it finds any, then automatically capture all of its images from the Feeder. If the Feeder is empty when acquisition starts, then all images are automatically captured from the Flatbed.

Application

This capability offers a less complex method to let the Source automatically choose whether to acquire images from the Automatic Document Feeder or from the Flatbed.

Note: If this capability is not supported, Applications can simulate this behavior by examining CAP_FEEDERLOADED. If it is TRUE, set CAP_FEEDERENABLED to TRUE. If it is FALSE, set CAP_FEEDERENABLED to FALSE. And after that begin to acquire images.

Source

Values

If the Source supports CAP_PAPERDETECTABLE, and it has both an Automatic Document Feeder and a Flatbed, then it should support this capability.

When this capability is set to TRUE the Source ignores the value of CAP_FEEDERENABLED. It always attempts to acquire its first image from the Automatic Document Feeder. If paper is not present, then images are acquired from the Flatbed.

When this capability is set to FALSE the source of images is determined by CAP_FEEDERENABLED.

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

Containers

MSG_GET TW_ONEVALUE TW_ENUMERATION

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

Required By

All ADF/Flatbed combo scanners.

TWAIN Version Introduced

Version 2.1

Related

CAP_FEEDERENABLED CAP_FEEDERLOADED