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 Trouble with duplex scanning into ImageEnMView

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T O P I C    R E V I E W
wskelton3 Posted - Oct 26 2011 : 14:32:04
Epson GT-S50 scanner with latest drivers
Using the demo "multi\multiview", TWAIN drivers

The scanner scans both sides of 5 pages, after the Page 10 progress bar disappears with the scan dialog still showing, the following errors appear....

EAccessViolation Access Violation @ 03245430

Click Ok, then...

EOSerror System code 1400 Invalid Window handle.

Debugging, the program never gets out of the acquire statement.
Scanning single sided works fine.

Can you suggest a method of troubleshooting this issue?

Thanks very much.
4   L A T E S T    R E P L I E S    (Newest First)
wskelton3 Posted - Oct 27 2011 : 08:30:26
Thanks for the effort. Maybe Epson will update their driver some day and that will make a difference.
fab Posted - Oct 27 2011 : 08:22:26
Unfortunately I don't know the reason, I haven't this device.
Duplex is just a setting hence the code used to retrieve images doesn't change acquiring in duplex mode.
wskelton3 Posted - Oct 27 2011 : 06:14:50
Thank you for the quick reply. Unfortunately neither worked.

ImageEnMView1.MIO.TwainParams.BufferedTransfer := false;
ImageEnMView1.MIO.TwainParams.FileTransfer := true;

Same error.

ImageEnMView1.MIO.TwainParams.UseMemoryHandle := false;

Scanned all pages, processed 7 and the erred...

EInvalidOp Invalid Floating Point Operation
fab Posted - Oct 27 2011 : 04:44:34
Please try to write following command before Acquire:

ImageEnMView1.MIO.TwainParams.UseMemoryHandle := false;

Also, if that doesn't help try this:

ImageEnMView1.MIO.TwainParams.BufferedTransfer := false;
ImageEnMView1.MIO.TwainParams.FileTransfer := true;