Dynamsoft TWAIN Products

hi there,

I'm having some problems with the evaluation version of dynamic twain 3.0.1 (the control says it's 3.0 but i installed it with the 3.0.1 download kit).

When i try and scan documents without showing the UI i only get one document being scanned and the multi-page tiff gets updated with that document image.

When i show the UI both documents are scanned but the twain.picture is empty and the saveastiff function fails.

I'm using VB6 sp6.

Can you help?

Here's the code.....


Private Sub cmdSelectSource_Click()


On Error GoTo ErrorHandString:

Twain.SelectSourceByIndex (lstSource.ListIndex)


Twain.OpenSource

Twain.IfTiffMultiPage = True
Twain.XferCount = -1
Twain.IfAutoFeed = True 'auto feed

Twain.IfDisableSourceAfterAcquire = True
Twain.IfThrowException = True
Twain.IfShowUI = False 'only scans one document!?!?
'Twain.IfShowUI = True 'scans both but no image?!?!?

If Twain.IfFeederLoaded = True Then
Twain.AcquireImage
End If

Exit Sub

ErrorHandString:
MsgBox "Error string: " + Twain.ErrorString


End Sub

Private Sub Twain_OnPostAllTransfers()

Twain.DisableSource
Twain.CloseSource

Twain.SaveAsTiff ("c:\\twaintiff.tif")

End Sub

Thanks,

Nik

Hi Nik,

We have modified your code, as seen below:


You can try it and see if there's still a problem.

Hi,

The code you posted here only works for one of the pages of the document I'm trying to scan. After the auto feeder scans the first page it stops. I need all 9 pages of the document to be scanned and added to the same tiff image.

Can you post some code to help me do this?

Thanks.

Hi Nik,

So far we cannot see from you code what causes your problem.

We'll further look into it, and get back to you if we figure it out.

Please check back.

Thanks.