xev
(1)
Name
xev - print contents of X events
Synopsis
/usr/bin/xev [-display displayname] [-geometry geom] [-bw
pixels] [-bs {NotUseful,WhenMapped,Always}] [-id windowid]
[-root] [-s] [-name string] [-rv]
Description
User Commands XEV(1)
NAME
xev - print contents of X events
SYNOPSIS
/usr/bin/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 see-
ing what causes events to occur and to display the informa-
tion 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 win-
dow.
-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 advi-
sory, and are normally set for popup dialogs and
other transient windows.
X Version 11 Last change: xev 1.2.1 1
User Commands XEV(1)
-name string
This option specifies the name to assign to the cre-
ated 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 prop-
erty colormap owner_grab_button randr
SEE ALSO
X(5), xwininfo(1), xdpyinfo(1), Xlib Programmers Manual, X
Protocol Specification
See X(5) for a full statement of rights and permissions.
AUTHOR
Jim Fulton, MIT X Consortium
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |x11/diagnostic/xev |
+-----------------------------+-----------------------------+
|Interface Stability |Committed |
+-----------------------------+-----------------------------+
X Version 11 Last change: xev 1.2.1 2