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 Trouble with duplex scanning into ImageEnMView		  New Topic  Reply to Topic
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wskelton3

USA
11 Posts
Posted - Oct 26 2011 :  14:32:04  Show Profile  Reply
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.

fab

1310 Posts
Posted - Oct 27 2011 :  04:44:34  Show Profile  Reply
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;
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wskelton3

USA
11 Posts
Posted - Oct 27 2011 :  06:14:50  Show Profile  Reply
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
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fab

1310 Posts
Posted - Oct 27 2011 :  08:22:26  Show Profile  Reply
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.
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wskelton3

USA
11 Posts
Posted - Oct 27 2011 :  08:30:26  Show Profile  Reply
Thanks for the effort. Maybe Epson will update their driver some day and that will make a difference.
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