[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 12345[6]78910 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 23:22:20 03/29/02 Fri
Author: Brian Lowe
Subject: Re: Endless scanning
In reply to: Michel 's message, "Re: Endless scanning" on 06:34:55 03/27/02 Wed

Hi Michel,

GetAllImages is identical in my current version and in v2. It happens outside the IDE using Xerox WorkCentre 950 twain interface.

After the initial (successful) scan, the call in ConcludeTransfer to
{ acknowledge end of transfer }
CallTriplet( pSourceId, pAppId,
MSG_ENDXFER, @PendingXfers, @TwainResult, DsmEntry);

does not change the value of PendingXfers (= 341 before and after this call).

Any suggestions?

Also, I have a much improved (IMHO) rubber band selection unit. Would you like me to send it?


>Hi Brian,
>Compare your current EnTwain unit with the one from
>version 2. The "if not PendingTransfers then"
>statement should stop the loop.
>I think I recall seeing some twain interfaces, where
>you need to close the interface after scanning to
>return to the application.
>Also, make sure you test this when running your
>program outside the IDE. I have seen strange results
>scanning within the debugger.
>Best regards,
>>My EnTwain unit loops for ever and has the following
>>code in GetAllImages. Did you ever fix this problem?
>>ConcludeTransfer( PendingTransfers, pSourceId, pAppId,
>> DsmEntry );
>>{ MB July 31, 1999. Twain message loop not terminating
>>properly }
>>if not PendingTransfers then
>> TwainQuit := True;
>>Brian Lowe
>>Belleson Corp.

[ Next Thread | Previous Thread | Next Message | Previous Message ]


[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.