Bar Code Reading throws :Exception from HRESULT: 0x800A4FC1

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Wednesday, October 3, 2007 10:51:48 AM(UTC)

Pradeep

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Posts: 14

Hi Leadtool Techies,
I am using the Leadtools 14.5 Barcode reading feature in my Dotnet 1.1 application.
When I try to read a Barcode from a TIFF image from a Standard Windows application in which there is no bar code(s) for testing I get a standard lead exception "LEAD Error: No Bar Code recognition" but when I do the same using a Windows service it throws an exception "Exception from HRESULT: 0x800A4FC1". Can anybody explain why it behave differnt on the same image.

Thanks,


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#2 Posted : Thursday, October 4, 2007 3:55:55 AM(UTC)

Adnan Ismail

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It seems
the service adds Hex(800A0000) to the value returned by our ActiveX. This is
because the value Hex(A4FC1) is 20417, which is our error code for ERROR_BARCODE_NOTFOUND " No bar code recognition"

#3 Posted : Thursday, October 4, 2007 4:21:50 AM(UTC)

Pradeep

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Posts: 14

Thanks Adnan for the response to this post. I understand the windows service does this. Can you please give a sample of how to handle this exception with an Lead error code. I haven't seen many samples which handle Leadtools exceptions and Leadtools error codes.

Thanks again.
Pradeep

#4 Posted : Saturday, October 6, 2007 11:48:34 PM(UTC)

Adnan Ismail

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Pradeep,
Can you
send me a sample file that shows this exception when trying to read the barcode
on it? Also, can you tell me what build number (version info) of LEADTOOLS DLLs that you have on your computer?

#5 Posted : Monday, October 8, 2007 9:31:53 AM(UTC)

Pradeep

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Posts: 14

Adnan,
Sorry for the late response. I figured out how to handle the error code. It is a COM exception and not a dot net exception. I was breaking my head to see the similar dot net exception code.
By the way I am using leadtools 14.5
Thanks anyway.
Pradeep

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