You may have noticed if you are running QEMU/KVM manually that in Windows the the position of the physical mouse does not match where the mouse is positioned within Windows.
There is an easy command to pass to qemu-kvm or qemu-system (whatever you call your binary):
-usbdevice tablet
The above flag will fix your mouse pointing problems whether you are running Windows 95, 98, NT, XP 2000, 2003, Vista, 7, 8 10 or Server 2000, 2003, 2008, 2012, 2016 or 2019 etc...
qemu, kvm, server, installs, pointer, solutionyou, manually, positioned, binary, usbdevice, tablet, nt, xp, vista, etc,