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ImageAcquired only on last page

Last post 26 Feb 2008, 8:14 AM by Glenn. 1 replies.
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  •  26 Feb 2008, 12:10 AM 13320

    ImageAcquired only on last page

    I have an application that was worked fine on XP but after upgrading to Vista the regular driver quit working.  After switching to the WIA driver for the scanner it would scan multiple pages but the imageacquired event is only fired after the last page.  Is there a property that needs to be set or is this a bug in the system.  Right now i am stumped, the original code used DotTwain 1.0 and has been working fine until Vista.  Vista sees the scanner and when i tried the AcquisitionDemo code it only records the last page also.  If anyone has any insight i would greatly appreciate it.

     Thanks, Tim

  •  26 Feb 2008, 8:14 AM 13325 in reply to 13320

    Re: ImageAcquired only on last page

    For Vista you will need DotTwain 2.1 or higher.

    I've seen similar issues with Brother scanners and it was a bug in the driver.  Basically what was happening is that the pages were being scanned into the scanner's internal buffer before returning to DotTwain; and it would give us the last page it scanned.

    Try setting the AutoScan property to false.  That should turn off the internal buffer, although I can't be sure that will work with a WIA driver.


    Glenn Chittenden Jr.
    Atalasoft Development Team
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