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Date Posted: 09:21:31 09/25/00 Mon
Author: Matthew Harding
Subject: Inverted Black & White scans

I'm using Envision with Delphi 5 and a Fujitsu/Kofax scanner with Kofax TWAIN drivers. In your demo app if I scan a multi-page document the final image frames get inverted (negative). However the images displayed in the IMAGESCROLLBOX from the ONACQUIRE procedure ("ImageScrollBox.Graphic := pScanInfo^.Graphic;") appear OK, it's only when the final LoadFromFile (TMainForm.ScanMenuClick(Sender: TObject);) is called that images are inverted.
"if ScanInfo.MultiPage then
if ScanInfo.ImageCount > 0 then

Scanning a single image is OK as the loadfromfile is never called, the imagescrollbox is updated by the OnAcquire procedure only.

Can you please advise



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