[Solved] WIA – how to check scanner if adf(feeder) capable? [closed]

From the documentation, which can be found here

WIA_DPS_DOCUMENT_HANDLING_CAPABILITIES
ScannerDeviceDocumentHandlingCapabilities Contains the capabilities of
the scanner. The minidriver creates and maintains this property. An
application reads this property to determine whether the scanner has a
flatbed, document feeder, or duplexer installed. This property is also
used to further define the installed features.

and

The following table describes the constants that are valid with
Windows XP or later.

DETECT_FEED The scanner can detect a document in the feeder.

DETECT_FLAT The scanner can detect a document on the flatbed platen.

DETECT_SCAN The scanner can detect a document in the feeder only by
scanning.

DUP The scanner has a duplexer.

FEED The scanner has an automatic document handler installed.

FLAT The scanner has a flatbed platen.