Touch screen driver for windows 7 , multiple monit

Question

I am developing a touch screen driver for windows 7 , it works fine when a single display is attached but when i attach a secondary display the touch inputs get mapped only to the primary display . Is there any way in which i can map the touch inputs to the secondary monitor ?

Any inputs or pointers will be greatly appreciated ?.

Answer 1

If you are making a tablet pc service, then it is possible to map the display using the Wisp registry keys under HKLM\Software\Microsoft\Wisp.

However, if you are relying completely on HID touch of the device, then you will need to use Windows' touch calibration settings to map the display appropriately.

Answer 2

As far as I know this is not possible in Windows 7, but according to MSDN should be possible in Windows 8:

HID Descriptor for Digitizers

Starting with Windows 8, a touch digitizer must appear as a touch screen (page = 0x0D, usage = 0x04). A stylus digitizer must appear as an integrated pen (page = 0x0D, usage = 0x02) or an external pen (page = 0x0D, usage = 0x01). Integrated touch and pen devices are mapped to the display that they are physically connected to. External pen devices are mapped to the virtual desktop.

http://msdn.microsoft.com/en-us/library/windows/hardware/jj151564%28v=vs.85%29.aspx