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Intercept program wakeup call - Scanner

Brendt Hess
Brendt Hess asked
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I am looking for approaches to intecepting the call between a printer and a memory-resident program on a Win9x system.

We are using HP Laserjet 3150 and 3200 multifunction printers.  I am trying to intercept the 'pop-up' call that loads the Jetsuite front-end whenever paper is placed into the 3150's Scan/Fax tray, and pop up a VB program instead of the default program.  If there is already a TWAIN session open on the PC, then the pop-up doesn't happen.  If not, it will happen.  However, leaving a TWAIN session open is not a good idea, since it interferes with the Faxing capability of the 3150.

Basically, I need suggestions as to what approach I should take.  Tools that could be used, methods of attack, etc. would be good.  Points distributed for quality of suggestions, with multiple people being point receivers.
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Commented:
Hi
Take a look on my System-wide shell hook at http://www.freevbcode.com/ShowCode.Asp?ID=1308

Cheers
Brendt HessSenior DBA
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Commented:
Sorry about this - I forgot about it during the "great outage". :-)

Although I found a different (less API intrusive) method of accomplishing what I needed to do, this was just what I needed for what I asked about.  Thanks!
Ark
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Commented:
Thanks for points, glad I could help you

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