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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,When‐
Mapped,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 hap‐
pens 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 devel‐
opment 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 creat‐
ing 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 substructure
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)
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