Jonathan de Boyne Pollard wrote in a message to Mike Bilow:

MB>
  > Updating the mouse cursor is, I believe, handled by a
  > separare thread in PM.
MB>

 JdBP>   Not AFAIAA.  The mouse pointer is drawn by PMDD.SYS, and
 JdBP> MOUSE.SYS   queues up all mouse activity in its interrupt
 JdBP> handler.

 JdBP>   Grabbing mouse motions (queued up by the mouse device
 JdBP> driver) and   passing them on as WM_MOUSEMOVE messages *is*
 JdBP> handled at the application   level though, AFAIAA.

I guess this should be more carefully worded.  Actually drawing the
physical mouse pointer is handled by a display driver, and the exact way in
which this is done may vary depending upon the specific hardware and
drivers used.  What I mean by "updating the mouse cursor" is
sending a message to the display drivers instructing that the mouse cursor
be drawn at a specific place, and this is clearly handled at application
level.  What I am not sure about is whether PM devotes an entire thread to
this update procedure exclusively.
 
-- Mike


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