mouse(7)                                                 mouse(7)



     NAME
          mouse - mouse input device driver

     DESCRIPTION
          The mouse driver provides simple access to the mouse device.
          This  driver  allows  one to open the mouse device, read the
          mouse position and sense the mouse button  state.   All  I/O
          transactions  complete  immediately,  whether  succeeding or
          not.

          Opens of /dev/mouse will always succeed as long as no  other
          user  is  using  the mouse (see console(7)) and the mouse is
          connected to the system.  Reads from the mouse device always
          return  4 bytes.  The first two are a 16 bit signed absolute
          mouse horizontal position.  The  next  two  bytes  give  the
          vertical position in a similar manner.  Positioning is rela-
          tive to (0, 0) when the A/UX system was started.

          Writes to the mouse device always fail.  The mouse  supports
          one  ioctl, MOUSE_BUTTON, which takes as a parameter the ad-
          dress of a character into which it returns the current state
          of the mouse's button.  The symbol for this ioctl is located
          in /usr/include/sys/mouse.h.

     FILES
          /dev/mouse
          /usr/include/sys/mouse.h

     SEE ALSO
          console(7).

























     April, 1990                                                     1