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xwininfo - window information utility for X
xwininfo [ -help ] [ -root ] [ -id id ] [ -name name ] [ -int ] [ -children ] [ -tree ]
[ -stats ] [ -bits ] [ -events ] [ -size ] [ -wm ] [ -shape ] [ -frame ] [ -english ] [ -metric ] [ -all ]
[ -display display ]
Xwininfo is a utility for displaying information
about windows. Various information is displayed depending on which options
are selected. If no options are chosen, -stats is assumed.
The user has the option of selecting the target window with the mouse (by clicking any mouse
button in the desired window) or by specifying its window id on the command
line with the -id option. Or instead of specifying the window by its id number,
the -name option may be used to specify which window is desired by name.
There is also a special -root option to quickly obtain information on the
screen’s root window.
The following is a sample summary taken with no options specified:
- Print out the ‘Usage:’ command syntax summary.
- This option specifies that X’s root window is the target window. This is useful
in situations where the root window is completely obscured.
- -id id
- This option allows the user to specify a target window id on the
command line rather than using the mouse to select the target window. This
is very useful in debugging X applications where the target window is not
mapped to the screen or where the use of the mouse might be impossible
or interfere with the application.
- -name name
- This option allows the user
to specify that the window named name is the target window on the command
line rather than using the mouse to select the target window.
- This option specifies that all X window ids should be displayed as integer values.
The default is to display them as hexadecimal values.
- This option causes the root, parent, and children windows’ ids and names of the selected
window to be displayed.
- This option is like -children but displays all
- This option causes the display of various attributes
pertaining to the location and appearance of the selected window. Information
displayed includes the location of the window, its width and height, its
depth, border width, visual id and class, colormap id if any, map state,
backing-store hint, and location of the corners.
- This option causes the display of various attributes pertaining to the selected window’s raw
bits and how the selected window is to be stored. Displayed information
includes the selected window’s bit gravity, window gravity, backing-store
hint, backing-planes value, backing pixel, and whether or not the window
has save-under set.
- This option causes the selected window’s event
masks to be displayed. Both the event mask of events wanted by some client
and the event mask of events not to propagate are displayed.
- This option causes the selected window’s sizing hints to be displayed. Displayed information
includes: for both the normal size hints and the zoom size hints, the user
supplied location if any; the program supplied location if any; the user
supplied size if any; the program supplied size if any; the minimum size
if any; the maximum size if any; the resize increments if any; and the
minimum and maximum aspect ratios if any.
- This option causes the selected
window’s window manager hints to be displayed. Information displayed may
include whether or not the application accepts input, what the window’s
icon window # and name is, where the window’s icon should go, and what the
window’s initial state should be.
- This option causes the selected window’s
window and border shape extents to be displayed.
- This option causes window manager frames to be considered when manually selecting windows.
- This option causes all individual height,
width, and x and y positions to be displayed in inches (and feet, yards,
and miles if necessary) as well as number of pixels. -metric and -english
may both be enabled at the same time.
- This option causes all individual height, width, and x and y positions
to be displayed in millimeters as well as number of pixels, based on what
the server thinks the resolution is. Geometry specifications that are in
+x+y form are not changed.
- This option is a quick way to ask for all information possible.
- -display display
- This option allows you to specify the server to connect to.
xwininfo: Window id: 0xa0000e "email@example.com: /root"
Absolute upper-left X: 144
Absolute upper-left Y: 215
Relative upper-left X: 144
Relative upper-left Y: 215
Visual Class: TrueColor
Border width: 0
Colormap: 0x20 (installed)
Bit Gravity State: NorthWestGravity
Window Gravity State: NorthWestGravity
Backing Store State: NotUseful
Save Under State: no
Map State: IsViewable
Override Redirect State: no
Corners: +144+215 -509+215 -509-333 +144-333
Using -stats -bits shows some redundant information.
- To get the default host and display number.
The -geometry string displayed must
make assumptions about the window’s border width and the behavior of the
application and the window manager. As a result, the location given is
not always correct.
Mark Lillibridge, MIT Project Athena
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