DataTransferred Event on ht officejet pro 6830

[David Payne]

Hi Eugene,

I am trying to implement NTWAIN in my current projet, but I have a little issue with the DataTransferred event. It is only triggered after all pages are scanned instead of being triggered after each page (I tried it on a brother ads 2100 scanner with the same settings and it works as expected).

Am I missing something?

Thanks

[David Payne]

I don't know if it will help, but the issue seems to be happening only when I select the twain driver, it works well when I select the WIA driver (WIA-HA Officejet Pro 6830 usb).

[Eugene Wang]

Could just be a poorly written twain driver. If it pops up a progress dialog during scanning perhaps you could try click around (non-actionable part of UI) to see if it'll do something. Otherwise I don't really know why.

[David Payne]

Thanks, I will check this out, I hope this won't happen with all hp devices

[David Payne]

Hi Eugene, It seems to be an issue with the HP Twain driver, I tried with other sdks and the issue is the same. Thanks for your suggestion! David