Mouse Delta Movement instead of Coordinates

In some effects that use the mouse, i.e. Mouse-Based Motion Blur , using the coordinates make it so that it works only when you turn oposite from before, because you've hit the end of the screen. Is it possible to get the actual [strike]raw input[/strike] delta movement from the mouse, so we can get how much the mouse was actualy moved, outside the boundaries of the screen?

You mean the delta movement? Raw input is something different and already used when available.

Precisely, silly me.

Sure, I can add that.