LEADTOOLS Support
Imaging
Imaging SDK Questions
Muti Image Scanning using L_TwainAcquireMulti giving error
This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.
#1
Posted
:
Monday, February 5, 2007 9:19:40 PM(UTC)
Groups: Registered
Posts: 4
hi
I m using L_TwainAcquireMulti to scan multiple images from a scanner but this API is returning
a value ERROR_DOCUMENT_NOT_ENABLED ie Document capability is required to use this function I am not understanding which capabilty should be negogiated after L_TwainStartCapsNeg to use this API. Pls help me
Thanx in advance
Sunit
#2
Posted
:
Tuesday, February 6, 2007 10:29:09 AM(UTC)
Groups: Guests
Posts: 3,022
Was thanked: 2 time(s) in 2 post(s)
Sunit,
This indicates to me that you are attempting to use
functionality that requires the Document/Medical suite enable and you haven't
enabled it.
If you do own a Document toolkit, you need to unlock
Document support before using Fast TWAIN functions.
If you don't have a LEADTOOLS Document Imaging toolkit, you
can still use Twain, but you will have to use the L_TwainAcquire function
instead.
#3
Posted
:
Wednesday, February 7, 2007 2:34:40 AM(UTC)
Groups: Registered
Posts: 4
Adnan Ismail
Thanx for the reply.Yes I have Document
toolkit , I unlock the Document Support using Lead Tool API
L_UnlockSupport (L_SUPPORT_DOCUMENT, L_KEY_DOCUMENT);.Its working.I
have another query ,which Functions are catogorized under Fast Twain
Functions.
Thanx again for the reply
Sunit
#4
Posted
:
Wednesday, February 7, 2007 10:36:01 AM(UTC)
Groups: Registered, Tech Support, Administrators
Posts: 764
Please take a look at the API help file article entitled "Fast TWAIN (Scan Configurations)". This will explain the functionality of Fast TWAIN and lists the associated functions.
#5
Posted
:
Wednesday, February 7, 2007 11:07:59 PM(UTC)
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Posts: 4
Greg Ross
Thanx a lot.I have a sheet on which two images are drawn.I want to scan both the images and store them in two different files .I tried with L_TwainAcquireMulti as its one of its parameter is bMultiPageFile ( which is Flag that indicates whether to save multiple images into a single multi-page file, or into a series of single page files ),set to FALSE .but it is not working.I feel this flag is used to stored images when more than one document / sheet is scanned(supplied by a feeder) to a single file (viz TIFF).Pls help me
Thanx a lot
Sunit
#6
Posted
:
Monday, February 12, 2007 4:58:07 AM(UTC)
Groups: Registered, Tech Support, Administrators
Posts: 764
If I am understanding your correctly, you have TWO images on ONE sheet of paper correct? If that is the case, then L_TwainAcquireMulti will not be able to split the scan-job into two different images. The bMultiPageFile property only has an affect when you are scanning more than one sheet in one call to L_TwainAcquireMulti.
If you need to split the image in half, you will need to call L_TwainAcquire and get the image that comes in through the Acquire event/callback. Then you will need to call L_InitBitmap to create a new blank image. Then you can call L_CombineBitmap to copy/paste one half of the image to the new image you created with L_InitBitmap. Then you will need to repeat the process for the other half of the image.
#7
Posted
:
Monday, February 12, 2007 8:12:21 PM(UTC)
Groups: Registered
Posts: 4
GregR,
Thanx a lot for ur reply.
LEADTOOLS Support
Imaging
Imaging SDK Questions
Muti Image Scanning using L_TwainAcquireMulti giving error
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