We're having difficulty with a certain ADF scanner, Xerox 262. When we scan multiple pages in simplex mode we only get back the first page of the scan even though the scanner scanned >1 pages. In using the Xerox scanner with Twack_32 we see all of the pages coming through so we don't necessarily think it's a problem with the Xerox TWAIN driver. Further, if in our software we set to scan duplex mode then we do see all of the pages come through to our application. So this seems to be constrained by simplex mode on the Xerox scanner. And if we scan either in duplex or simplex mode with other manufacturers scanners we see all of the pages come through.
1) We're using the latest version of GDPicture9
2) We are performing TwainSetAutoFeed(false) and TwainSetAutoScan(false)
3) We also turned on logging and we are attaching the log file from the scan.
Please let us know if you need anything else from us.