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Home › Forums › TWAIN Classic › Problem of backwards compatibility
Hi!
I use twain 2.3 (TWAINDSM.DLL) in my application with HP Scanjet 200 TWAIN Protocol 1.9.
My TWAIIN calls are:
OpenDSM: DG_CONTROL, DAT_PARENT, MSG_OPENDSM
OpenDS: DG_CONTROL, DAT_IDENTITY, MSG_OPENDS
OpenDS: DG_CONTROL, DAT_USERINTERFACE, MSG_ENABLEDS
ProcessDeviceEvent: DG_CONTROL, DAT_EVENT, MSG_PROCESSEVENT
and as a result of the last call I allways get TWRC_NOTDSEVENT instead of TWRC_DSEVENT
COuld please someone help with this?
I have also tried this sample
http://sourceforge.net/projects/twain-samples/
the same problem here – no image info after scanning