What does GUID_SysMouse map to?

Question

We have software that runs fine under a normal Windows installation but when we try running it under a hardened Windows OS with device drivers stripped out it crashes horribly on this call:

this.mouse = new Device(SystemGuid.Mouse)

underneath the hood SystemGuid.Mouse maps to GUID_SysMouse. If I knew what GUID_SysMouse was equal to I could figure out what device driver or registry value to put back.

UPDATE: I found out that GUID_SysMouse maps to {6f1d2b60-d5a0-11cf-bfc7-444553540000} but this key doesn't exist in the registry. Where should I be looking?

Answer 1

GUID_SysMouse represents the system's mouse input device, which needs to exist for this call to work.

For details, see the DirectInput Device documentation.

It sounds like you may have removed one too many drivers - probably the one that your mouse input device is using, and made it invalid. If DI can't attach to the mouse, you'll throw on that call.