Highrez

XMBC Version: 2.19.2
Windows Version: win10
Mouse Information (brand/model):
Relevant Computer Information (CPU, RAM etc):
Did the problem occur after an upgrade of XMBC? (If so, from what version?):
Did the problem occur after a Windows update/upgrade? (If so, from what version?):
How long have you used XMBC?: a little time
What language and keyboard layout do you use in Windows?:

Clear description of the problem - try and include as much information as possible, including what button and mappings you are having problems with (if applicable).:The features of XMBC are wonderful.Unfortunately, it can't map the dpi button(which can adjust Mouse speed).It will be perfect if the developer can add this feature to XMBC

Sorry, not possible, the DPI button is not exposed to Windows from the device itself, so Windows sees nothing so no, it cant be remapped in XMBC.
The FAQ has more information as to how XMBC supports remapping of buttons and why it supports the buttons it supports!

I was also hoping to map some more useful function to this button It would probably require some kind of OS hack, but thanks for clearing this out.