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I have an aftermarket touchscreen that was installed on Windows XP and is now running on Windows 8. For Windows XP I had a driver that only detected mouse input via the touchscreen. Windows 8 does a nice job of detecting finger input as well with the generic driver. However, the X axis input is reverse and I would like to correct this.

How do I do this?

If more information is needed I can try to provide it.

EDIT: I am having trouble. I opened the calibration tool but on touching the area with the crosshair it shows my finger is on the right side of the screen.

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You might want to try calibrating the input device (instructions based on information here since I do not have a device with a touchscreen):

  1. Search for "calibrate" and click the "Settings" filter on the right.

  2. Click the option to calibrate the screen for touch input.

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I am having trouble. I opened the calibration tool but on touching the area with the crosshair it shows my finger is on the right side of the screen. What does that mean? – nvdkgm Oct 29 '12 at 0:54
    
Hmm... I was hoping the calibration tool would see that and figure out that the x-axis is reversed. – Nathan Osman Oct 29 '12 at 0:55
    
Would you say it would be best to use the Windows XP drivers and live with the mouse input based touch? Or do you think a fix exists for this? – nvdkgm Oct 29 '12 at 0:57
    
@nvdkgm: Personally I would suggest living with mouse-based input, but someone else here might know of a solution. – Nathan Osman Oct 29 '12 at 1:02

There's a pretty similar question for windows 7 here - I did a few tests (at my own peril) to see what works, and polynomial's mouse inverter from this answer seems to work. Direct link here. I need to poke around some more to get it to autostart, but start it up, click on the little mouse button on your taskbar, and select which axis to invert.

It supposedly remembers your last settings once started, and you can use ctrl+ x to invert X axis and ctrl+ x to invert y axis.

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Unfortunately, this did not work for the touch portion. However it is a handy tool that I have saved. I think that executable was only for a mouse. – nvdkgm Oct 29 '12 at 3:16

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