MEV(1)                                                     MEV(1)

       mev - a program to report mouse events

       mev [ options ]

       The  `mev' program is part of the gpm package.  The infor-
       mation below is extracted from the texinfo file, which  is
       the preferred source of information.

       The  `mev'  program  is  modeled after `xev'. It prints to
       `stdout' the console events it  gets,  both  keyboard  and
       mouse events.

       `mev''s  default behaviour is to get anything, but command
       line switches can be used to set the various fields in the
       `Gpm_Connect'  structure,  in  order to customize the pro-
       gram's behaviour. I'm using `mev' to handle  mouse  events
       to Emacs.

       Command line switches for `mev' are the following:

       -C number
              Select  a virtual console to get events from.  This
              is intended to be used for debugging.

       -d number
              Choose a default mask. By default the  server  gets
              any  events  not  belonging  to the event mask. The
              mask can be provided either as a decimal number, or
              as a symbolic string.

       -e number
              Choose  the  event  mask.  By  default any event is
              received. The mask can be provided either as a dec-
              imal number, or as a symbolic string.

       -E     Enter emacs mode. In emacs mode events are reported
              as lisp forms rather than numbers. This is the for-
              mat used by the t-mouse package within emacs.

       -f     Fit events inside the screen before reporting them.
              This options re-fits drag events, which are allowed
              to exit the screen border,

       -i     Interactive.  Accepts  input from `stdin' to change
              connection parameters.

       -m number
              Choose the minimum modifier mask.  Any  event  with
              fewer  modifiers  will not be reported to `mev'. It
              defaults to `0'.  The mask must be provided  either
              as a decimal number, or as a symbolic string.

       -M number
              Choose  the  maximum  modifier mask. Any event with
              more modifier than specified will not  be  reported
              to  `mev'.   It  defaults to ` ~0', i.e. all events
              are received.  The mask must be provided either  as
              a decimal number, or as a symbolic string.

       -p     Requests  to  draw  the  pointer during drags. This
              option is used by emacs to avoid invoking `ioctl()'
              from lisp code.

       When the arguments are not decimal integers, they are con-
       sidered lists of alphanumeric characters, separated  by  a
       single  non-alphanumeric character. I use the comma (`,'),
       but any will do.

       Allowed names for events are  `move',  `drag',  `down'  or
       `press', `up' or `release', `motion' (which is both `move'
       and `drag'), and `hard'.

       Allowed names for modifiers are `shift', `leftAlt', `righ-
       tAlt', `anyAlt' (one or the other), `control'.

       When  the  `-i'  switch  is  specified, `mev' looks at its
       standard input as command lines rather  than  events.  The
       input  lines are parsed, and the commands `push' and `pop'
       are recognized.

       The `push' command, then, accepts the options `-d',  `-e',
       `-m'  and  `-M',  with  the  same meaning described above.
       Unspecified options retain  the  previous  value  and  the
       resulting masks are used to reopen the connection with the
       server. `pop' is used to pop the connection stack.  If  an
       empty stack is popped the program exits.

       Other  commands  recognized are `info', used to return the
       stack depth; `quit' to prematurely terminate the  program;
       and  `snapshot' to get some configuration information from
       the server.

       Beginning with release 1.16, mev  no  longer  works  under
       xterm.   Please use the rmev program (provided in the sam-
       ple directory) to watch gpm events under xterm or rxvt.

       Alessandro Rubini <>
       Ian Zimmerman <>

       /dev/gpmctl The socket used to connect to gpm.

        gpm(8)       The mouse server
        gpm-root(1)  An handler for Control-Mouse events.

       The info file  about  `gpm',  which  gives  more  complete
       information and explains how to write a gpm client.

                          February 1995                         1