Linux Manual Pages

Free Software * Books

Source Code

Free Media

Linux

XWININFO

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
ENVIRONMENT
SEE ALSO
BUGS
AUTHOR

NAME

xwininfo − window information utility for X

SYNOPSIS

xwininfo [−help] [−id id] [−root] [−name name] [−int] [−children] [−tree] [−stats] [−bits] [−events] [−size] [−wm] [−shape] [−frame] [−all] [−english] [−metric] [−display display]

DESCRIPTION

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.

OPTIONS

	−help		Print out the ‘Usage:’ command syntax summary.
	−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.

	−root		This option specifies that X’s root window is the target window. This is useful in situations where the root window is completely obscured.
	−int		This option specifies that all X window ids should be displayed as integer values. The default is to display them as hexadecimal values.

−children

This option causes the root, parent, and children windows’ ids and names of the selected window to be displayed.

	−tree		This option is like −children but displays all children recursively.
	−stats		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.
	−bits		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.
	−events		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.
	−size		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.
	−wm		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.
	−shape		This option causes the selected window’s window and border shape extents to be displayed.
	−frame		This option causes window manager frames to be considered when manually selecting windows.
	−metric		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.

−english

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.

−all

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; see Xorg(1).

EXAMPLE

The following is a sample summary taken with no options specified:

xwininfo: Window id: 0x60000f "xterm"

Absolute upper-left X: 2
Absolute upper-left Y: 85
Relative upper-left X: 0
Relative upper-left Y: 25
Width: 579
Height: 316
Depth: 8
Visual: 0x1e
Visual Class: PseudoColor
Border width: 0
Class: InputOutput
Colormap: 0x27 (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: +2+85 -699+85 -699-623 +2-623
-geometry 80x24+0+58

ENVIRONMENT

DISPLAY

To get the default host and display number.

BUGS

Using −stats −bits shows some redundant information.

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.

AUTHOR

Mark Lillibridge, MIT Project Athena

Opportunity

Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.

Education

Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.