Intercept messages from USB auxiliary device

[cuitino]

Thanks Again Gintaras,
When I run Raw input device info, I get the following output:

\\?\HID#VID_0554&PID_1001&MI_03#8&22bd9473&0&0000#{4d1e55b2-f16f-11cf-88cb-001111000030}
Usage page: 1,  usage: 0

When I input these values   Usage page: 1,  usage: 0    into Raw input.cs , I get the error:

Au.Types.AuException: The parameter is incorrect (87).
   at line 12 in Raw input.cs
   >>

pointing to the line:

if (!api.RegisterRawInputDevices(rid, 1, Marshal.SizeOf<api.RAWINPUTDEVICE>())) throw new AuException(lastError.message);