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XEV(1)                                                   General Commands Manual                                                  XEV(1)



NAME
       xev - print contents of X events

SYNOPSIS
       xev  [-display  displayname] [-geometry geom] [-bw pixels] [-bs {NotUseful,WhenMapped,Always}] [-id windowid] [-root] [-s] [-name
       string] [-rv]

DESCRIPTION
       Xev creates a window and then asks the X server to send it events whenever anything happens to  the  window  (such  as  it  being
       moved,  resized, typed in, clicked in, etc.).  You can also attach it to an existing window.  It is useful for seeing what causes
       events to occur and to display the information that they contain; it is essentially a debugging and development tool, and  should
       not be needed in normal usage.

OPTIONS
       -display display
               This option specifies the X server to contact.

       -geometry geom
               This option specifies the size and/or location of the window, if a window is to be created.

       -bw pixels
               This option specifies the border width for the window.

       -bs {NotUseful,WhenMapped,Always}
               This  option  specifies what kind of backing store to give the window.  The default is NotUseful. Backing store refers to
               the the pixels saved off-screen when the X server maintains the contents of  a  window;  NotUseful  means  that  the  xev
               process will redraw its contents itself, as necessary.

       -id windowid
               This option specifies that the window with the given id should be monitored, instead of creating a new window.

       -root   This option specifies that the root window should be monitored, instead of creating a new window.

       -s      This  option  specifies  that  save-unders should be enabled on the window. Save unders are similar to backing store, but
               they refer rather to the saving of pixels off-screen when the current window obscures other windows. Save unders are only
               advisory, and are normally set for popup dialogs and other transient windows.

       -name string
               This option specifies the name to assign to the created window.

       -rv     This option specifies that the window should be in reverse video.

       -event event_mask
               Select  which  events  to display.  The -event option can be specified multiple times to select multiple types of events.
               When not specified, all events are selected.  Available event masks: keyboard mouse expose visibility structure substruc‐
               ture focus property colormap owner_grab_button randr

SEE ALSO
       X(7), xwininfo(1), xdpyinfo(1), Xlib Programmers Manual, X Protocol Specification
       See X(7) for a full statement of rights and permissions.

AUTHOR
       Jim Fulton, MIT X Consortium



X Version 11                                                    xev 1.2.1                                                         XEV(1)