mouse(7)                                                 mouse(7)



     NAME
          /dev/mouse -mouse driver

     DESCRIPTION
          The mouse driver provides simple, UNIX®-style, 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
          relative to (0, 0) when the Oreo System was started.

          Writes to the mouse device always fail.  The mouse supports
          one ioctl, MOUSEBUTTON (in sys/mouse.h) which takes as a
          parameter the address of a character into which it returns
          the current state of the mouse's button.

     FILES
          /dev/mouse
          sys/mous.h

     SEE ALSO
          cat(1), console(7).


























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