TWAIN Working Group

Newsletter Signup
Donate
Help keep TWAIN free
  • About TWAIN
    • What’s New?
    • News
    • Events
    • Membership
    • Consider a Donation
    • Contact Us
  • Why TWAIN?
  • Developers
    • Driver Developer
    • Application Developer
    • TWAIN Features
    • Specification & Tools
    • Self Certification Process
  • Support Forums
  • Scanner End-User
  • Find Certified Drivers
    • Facebook
    • LinkedIn
    • Vimeo

Twacker tool 1.8.0.0

Forums › TWAIN Classic › Twacker tool 1.8.0.0

  • This topic has 1 reply, 2 voices, and was last updated 7 years, 10 months ago by MarkM.
Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • February 12, 2013 at 3:15 pm #22825 Reply
    EYADALY
    Participant
    • Topics - 1
    • Replies - 0
    • Total Posts - 1

    Hi,
    I’m doing some tests using two versions of the Twacker 32 bits tools on windows vista (64B OS) using the twain_32.dll as DSM.
    the first Twacker tool has the version 1.703, and I had not problem with my data source device.
    With the same DS and the Twacker tool (version 1.8.0.0), I got the message in Native mode transfert : Handle to Bitmap Invalid.
    When debugging the last Twacker code (version 1.8.0.0), I saw that the FixUp routine in Twacker.c called some windows function :
    hBitMap = CreateDIBitmap (hDC, lpDib, (LONG)CBM_INIT, (LPSTR)lpBits,
    (LPBITMAPINFO)lpDib, DIB_RGB_COLORS);

    The hBitmap was NULL, but when I call getLasterror() on CreateDIBitmap I had an Ok status, I mean a 0 return code of CreateDIBitmap but NULL pointer!

    Can some one Help me resolving this?
    Thanks a lot.

    February 27, 2013 at 3:09 pm #25816 Reply
    MarkM
    Participant
    • Topics - 1
    • Replies - 135
    • Total Posts - 136

    Howdy…

    I tried this with one of my Kodak TWAIN drivers (i940), running the 32-bit Twacker 1.8.0.0 on Windows 8 (64-bit). I ran numerous native transfer scans with black-and-white, grayscale and color, and encountered no problems using either TWAINDSM.DLL or TWAIN_32.DLL. I also confirmed with another vendor that they’re not seeing any issues with this configuration…

    Based on that admittedly limited feedback it seems reasonable to conclude that the scanner driver is having a problem.

    If you can provide more details on all of the settings used for the scanning session (assuming that makes a difference), I’d be happy to retry a test that’s more exact compared to what you’re doing. Otherwise I’d take a closer look at the contents of the data being passed to CreateDIBitmap…

  • Author
    Posts
Viewing 2 posts - 1 through 2 (of 2 total)
Reply To: Twacker tool 1.8.0.0
Your information:




Quick Links

Service Providers
TWAIN Support Forums
Membership
Contact Us
Privacy Policy

Newsletter Signup

TWAIN Working Group Family

TWAIN Working Group
TWAIN Direct®
TWAIN Resources
TWAIN Certified Drivers
PDF/raster

  • Facebook
  • GitHub
  • LinkedIn
  • Vimeo

Recent Topics

  • EPSON V600 TWAIN and WIA on Windows 10
  • When and how to use WaitForEvents command ?
  • Problem enumerating list of installed scanners in windows server 2012
  • Failed to create TWAIN progress! Error code is 1260.
  • To get the list of scanners from javascript client side (browser)
  • Quarterly Newsletter
  • TWAIN Working Group Membership
  • Logo Usage
  • TWAIN License
  • Contact Us
Privacy Policy • Privacy Tools • Copyright © 2021 TWAIN Working Group • by iHwy, LLC • Log in

Insert/edit link

Enter the destination URL

Or link to existing content

    No search term specified. Showing recent items. Search or use up and down arrow keys to select an item.