Windows RAWMOUSE bitfield indicating which button or wheel transitions occurred.
Signed event data: wheel delta for wheel flags, X-button id for X-button flags, otherwise normally 0.
Windows RAWMOUSE movement-mode flags that determine how to interpret x and y.
Horizontal raw motion component: normally a relative delta; normalized absolute input when mouse_flags & 0x01 is set.
Vertical raw motion component: normally a relative delta; normalized absolute input when mouse_flags & 0x01 is set.
Optionaldevice_Device path identifying the physical mouse that generated the event.
Raw mouse event received by
Mouse.OnRawEvent.