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Windows 7 with multiple touchscreen

  • 03-12-2009 4:26pm
    #1
    Gurgle
    Closed Accounts Posts: 5,064 ✭✭✭


    Hoping someone knows how to do this:
    I've 2 touchscreen digitizers and 2 monitors on Windows7.

    Each digitizer can handle 10 input points.

    They have different names / PIDs, and both show up as HID devices under control panel.

    They are both working and passing touch info.

    But:
    1) Windows reports that there are 10 touch points available (not 20)
    2) If I touch them separately, all the touch points show up on monitor 1
    3) If I touch both, the second doesn't appear

    Is there a wizard / configuration setting somewhere that lets you configure your digitizers / monitors setup?

    Any other suggestions?


Comments

  • #2
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 92,442 Mod ✭✭✭✭Capt'n Midnight


    A weird thing to try , more for touch screen monitors though
    if the second monitor is to the left of the main monitor then it will have negative co-ordinates which some drivers don't like - try it on the right hand side instead

    usual update drivers etc


  • #3
    Gurgle
    Closed Accounts Posts: 5,064 ✭✭✭Gurgle


    Capt'n Midnight wrote: »
    A weird thing to try , more for touch screen monitors though
    Yes, its a weird thing to try.
    I'm working on firmware development for touchscreen digitizers, so have to assume somebody will try every possible nutjob configuration.
    Capt'n Midnight wrote: »
    if the second monitor is to the left of the main monitor then it will have negative co-ordinates which some drivers don't like - try it on the right hand side instead

    usual update drivers etc
    It is on the right, Win 7 doesn't seem to let you put the secondary monitor on the left at all.
    Thing is - the digitizer spec for Win 7 doesn't include any 'offset' option to allow for a second touchscreen. It scales your reported resolution to the primary display.

    I *thought* that with 2 digitizers / monitors connected there would be some configuration to match them - i.e. Windows would apply an offset to the touch data from the second one. As the monitors are VGA/DVI and the digitizers are USB, this can't be looked after by the hardware.


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