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X(1) UNIX Programmer's Manual X(1) NAME X - A network transparent window system for Unix DESCRIPTION X is a network transparent windowing system developed at MIT which runs under Ultrix-32 Version 1.2 and 4.3BSD Unix. X display servers run on computers with bitmap terminals. The server distributes user input to, and accepts output requests from various client programs located either on the same machine or elsewhere in the Internet. While a client normally runs on the same machine as the X server it is talking to, this need not be the case. X supports overlapping windows, fully recursive subwindows, text and graphics operations within windows. For a full explanation of functions, see ``Xlib - C Language X Inter- face'' document. When you first log in on a display running X, you are using the _x_t_e_r_m(_1) terminal emulator program. You need not learn anything extra to use a display running X as a terminal beyond moving the mouse cursor into the login window to log in normally. X attempts to provide hooks for your favorite style of user interface; feel free to write your own if you don't like the style provided by existing window managers (see _x_w_m(_1), _x_n_w_m(_1), or _u_w_m(_1)). These programs are used to manipulate existing top level windows, including moving, resizing, and iconifying existing windows. You should start your favorite window manager when you log in on a display running X. Current client programs of X include a terminal emulator (_x_t_e_r_m(_1)), window managers (_x_w_m(_1), _x_n_w_m(_1) and _u_w_m(_1)), bitmap editor (_b_i_t_m_a_p(_1)), access control program (_x_h_o_s_t(_1)), user preference setting program (_x_s_e_t(_1)), load monitor (_x_l_o_a_d(_1)), clock (_x_c_l_o_c_k(_1)), impress previewer (_x_i_m_p_v(_1)), font displayer (_x_f_d(_1)), demos (_x_d_e_m_o(_1)), and editors (e.g., _x_t_e_d). On some systems, mail notification has been integrated (_b_i_f_f(_1)). OPTIONS The following options can be given on the command line to the X server, usually started by _i_n_i_t(_1) using information stored in the file /_e_t_c/_t_t_y_s. (see _t_t_y_s(_5), _X(_8_c) for details): -a # sets mouse acceleration (pixels) -c turns off key-click c # sets key-click volume (0-8) -f # sets feep(bell) volume (0-7) -l sets LockUpDownMode Printed 9/15/87 25 January 1986 1 X(1) UNIX Programmer's Manual X(1) l sets LockToggleMode m forces "monochrome" mode on a color display -p # sets screen-saver pattern cycle time (minutes) -r turns off auto-repeat r turns on auto-repeat -s # sets screen-saver timeout (minutes) -t # sets mouse threshold (pixels) v sets video-on screen-saver preference -v sets video-off screen-saver preference -0 _c_o_l_o_r sets color map entry 0 (BlackPixel) -1 _c_o_l_o_r sets color map entry 1 (WhitePixel) -D _r_g_b_d_b sets RGB database file The defaults are ``-a 4 c 6 -f 3 l -p 60 r -s 10 -t 2 -0 #008 -1 #ffffff -D /usr/lib/rgb''. X DEFAULTS Many X programs follow the convention of using a file called ._X_d_e_f_a_u_l_t_s in your home directory to allow tailoring the default values of many items on the display (default font, border width, icon behavior, and so on). The format of this file is ``programname.keyword:value'', where the default value for each keyword is set to the specified string. If the program name is missing, the default ``keyword'' value is set to the value for all programs. Case is not signifi- cant in keywords. Any whitespace before the value is ignored. Any global defaults should precede program defaults in the file. See the manual pages for a list of what defaults can be set in a given program. Here is an overblown example ~/._X_d_e_f_a_u_l_t_s file. # this is a comment .BorderWidth: 2 .BitmapIcon: on .MakeWindow.Background:#8e8 .MakeWindow.Border: #f26 .MakeWindow.BodyFont:cor .MakeWindow.Foreground:medium slate blue .MakeWindow.Freeze: on .MakeWindow.Mouse: #e6f .MakeWindow.MouseMask:black .MakeWindow.ClipToScreen:on .Menufreeze: on .Menubackground: maroon .Panefont: 8x13 .SelectionFont: 8x13 .SelectionBorder: black .Paneborderwidth: 1 xterm.Panespread: .25 biff.Background: violet red Printed 9/15/87 25 January 1986 2 X(1) UNIX Programmer's Manual X(1) biff.BodyFont: 9x15 biff.Border: black biff.Foreground: green yellow biff.Mouse: coral bitmap.Background: forest green bitmap.Border: salmon bitmap.Foreground: white bitmap.Highlight: red bitmap.Mouse: black xclock.Background: plum xclock.Border: black xclock.Foreground: red xclock.Highlight: blue xclock.Mode: analog xshell.action.LeftButton:xterm =80x65-0+0 -fn 6x10 xshell.action.MiddleButton:xted =80x65+0-0 xshell.action.RightButton:xterm =20x20-0-0 -fn 6x10 -e dc xshell.action.$: xterm =80x65+0+0 -fn 6x10 -e sh xshell.action.#: xterm =80x65+0+0 -fn 6x10 -e su xshell.ReverseVideo:on xshell.WindowGeometry:=-0-0 xshell.Quiet: on xdemo.Background: white xdemo.Border: black xdemo.balls.Background:maroon xdemo.balls.Foreground:white xdemo.circles.Foreground:khaki xdemo.draw.Background:light gray xdemo.draw.BodyFont:oldeng xdemo.draw.Foreground:midnight blue xdemo.draw.Mouse: white xdemo.menulife.Background:medium turquoise xdemo.menulife.Foreground:orange red xdemo.menulife.MenuBackground:light blue xdemo.menulife.MenuFont:oldeng xdemo.menulife.MenuForeground:dark orchid xdemo.menulife.MenuMouse:orange xdemo.menulife.Mouse:salmon xdemo.plaid.Foreground:red xdemo.qix.Foreground:violet red xdemo.slide.Foreground:forest green xdemo.wallpaper.Foreground:medium turquoise xdemo.xor.Foreground:blue violet ximpv.Background: dark green ximpv.Border: red ximpv.Foreground: cyan ximpv.Mouse: white xload.Background: #ff0068 xload.Border: black xload.Foreground: slate blue xload.Highlight: yellow xload.ReverseVideo: on Printed 9/15/87 25 January 1986 3 X(1) UNIX Programmer's Manual X(1) xted.Background: firebrick xted.BodyFont: kiltercrn xted.Border: tan xted.Cursor: yellow xted.Foreground: white xted.Highlight: goldenrod xted.Mouse: cyan xterm.Background: #355 xterm.BodyFont: 6x13p xterm.Cursor: green xterm.Foreground: white xfax.Background: white xfax.Border: green xfax.Foreground: red xfax.Mouse: blue By default when you log in, only programs running on your local computer will be allowed to interact with your display. If someone else on a different machine wants to show you something, you can use the _x_h_o_s_t(_1) program to allow access to your display. SIZING WINDOWS Many programs ask you to manually size their top-level win- dow. When started, such a program will typically popup an identification window in the upper left corner of the display. The window can be created with the center button: press the button to define one corner of the window, move the cursor to where the opposite corner of the window should be and release the button. For text applications, the left and right buttons can also be used. Pressing the left but- ton typically produces an 80 by 24 window, which can then be moved around, and placed by releasing the button. Simi- larly, the right button typically produces an 80 by full screen window. For graphics applications, the left button typically creates a default size window in a default loca- tion, while the right button creates a default size window at the position of the cursor. Most applications (e.g., _x_t_e_d, _x_d_e_m_o, and _x_f_a_x) read options to control sizing of initial windows. The ``MakeWindow.BodyFont'' option controls the font for the popup window. The ``MakeWindow.BorderWidth'' and ``MakeWindow.InternalBorder'' options control the outer and inner borders. The ``MakeWindow.ReverseVideo'' option can be set to ``on'' to reverse colors. On color displays, the ``MakeWindow.Foreground'', ``MakeWindow.Background'', and ``MakeWindow.Border'' options control the color of the popup window, and the ``MakeWindow.Mouse'' and ``MakeWindow.MouseMask'' options control the color of the mouse cursor. The ``MakeWindow.Freeze'' option, when set to ``on'', will stop all other output while the window is Printed 9/15/87 25 January 1986 4 X(1) UNIX Programmer's Manual X(1) sized, and use a steady outline instead of continuously flashing the window outline. The ``MakeWindow.ClipToScreen'' option will clip the resulting window to fit on the screen. (Currently only implemented in programs using the _X_C_r_e_a_t_e_T_e_r_m subroutine.) GEOMETRY SPECIFICATION Most programs accept a geometry specification. This allows automatic creation and placement of windows on the screen at login and other convenient times. =[WIDTH][xHEIGHT][{+-}XOFF[{+-}YOFF]] The []'s denote optional parameters, the {}'s surround alternatives. WIDTH and HEIGHT are in number of characters for text oriented applications, and usually in pixels for graphics oriented applications. XOFF and YOFF are in pixels. If you don't give XOFF and/or YOFF, then you must use the mouse to create the window. If you give XOFF and/or YOFF, then a WIDTHx- HEIGHT window will automatically be creating without inter- vention. XOFF and YOFF specify deltas from a corner of the screen to the corresponding corner of the window, as fol- lows: +XOFF+YOFF upper left to upper left -XOFF+YOFF upper right to upper right +XOFF-YOFF lower left to lower left -XOFF-YOFF lower right to lower right KEYBOARD If you don't like the standard keyboard layout or the default definitions of keymap and function keys, the key- boards on most displays can be remapped to suit your taste. Many programs look for a file called ._X_k_e_y_m_a_p in your home directory. This is a binary file, produced from a source map with the _k_e_y_c_o_m_p(_1) program. COLORS Many programs allow you to specify colors for background, border, text, etc. A color specification can be given either as an english name (see /_u_s_r/_l_i_b/_r_g_b._t_x_t for defined names), or three hexadecimal values for the red, green, and blue components, in one of the following formats: #RGB #RRGGBB #RRRGGGBBB #RRRRGGGGBBBB DISPLAY SPECIFICATION When you first log in, the environment variable ``DISPLAY'' will be set to a string ``machine:display'' (for example, ``mit-athena:0'') which will determine which display an X application will talk to by default. Printed 9/15/87 25 January 1986 5 X(1) UNIX Programmer's Manual X(1) Most applications will also interpret an argument with a ``:'' in it to be the display to use. When using DECnet, the format ``node::display'' should be used. MENU DEFAULTS As there is now a standard menu package for X (_X_M_e_n_u(_3_x)), you can tune the behavior of menus in programs using this package with a set of _X_d_e_f_a_u_l_t_s. _X_t_e_r_m's `Mode Menu' is controlled by these defaults for example. MenuFreeze Determines whether or not to grab the _X server while a menu is posted. One of: on, off. The default value is off. MenuStyle Determines the menu display style. One of: left_hand, right_hand, center. The default value is right_hand. MenuMode Determines the menu selection high light mode. One of: box, invert. If box mode is chosen then the SelectionBorderWidth and SelectionBorderColor param- eters effect the box line width and color respec- tively. If invert mode is chose then the Selection- Foreground and MenuBackground colors are used for the inversion. The default value is invert. MenuMouse Determines the color of the mouse cursor while it is within the menu. Any valid _X color may be used. The default value is black. MenuBackground Determines the menu background color. Any valid _X color may be used. The default value is white. MenuInactivePattern Determines which of the five possible bitmap pat- terns will be used to tile inactive panes. One of: dimple1, dimple3, gray1, gray3, cross_weave. The default value is gray3. PaneStyle Determines the display style of all menu panes. One of: flush_left, flush_right, center. The default value is center. Printed 9/15/87 25 January 1986 6 X(1) UNIX Programmer's Manual X(1) PaneFont Determines the font used for the label (heading text) of each pane. Any valid _X font may be used. The default value is 8x13. PaneForeground Determines the pane foreground color. This is the color used for the label (heading text) in each pane. Any valid _X color may be used. The default value is black. PaneBorder Determines the color of all menu pane borders. Any valid _X color may be used. The default value is black. PaneBorderWidth Determines the width (in pixels) of all menu pane borders. Any integer greater than or equal to 0 may be used. The default value is 2. PaneSpread Determines the horizontal spread of menu panes. Any double greater than or equal to 0.0 may be used. A value of 1.0 specifies a one to one ratio between horizontal spread and vertical spread. A value less than 1.0 will compress the menu panes inward and a value greater than 1.0 will expand them outward. The default value is 1.0. SelectionStyle Determines the display style of all menu selections. One of: flush_left, flush_right, center. The default value is flush_left. SelectionFont Determines the font used for the text in each selec- tion. Any valid X font may be used. The default value is 6x10. SelectionForeground Determines the selection foreground color. This is the color used for the text in each selection. Any valid _X color may be used. The default value is black. SelectionBorder Determines the color of all menu selection borders. Any valid _X color may be used. The default value is black. Printed 9/15/87 25 January 1986 7 X(1) UNIX Programmer's Manual X(1) SelectionBorderWidth Determines the width (in pixels) of all menu selec- tion borders. Any integer greater than or equal to 0 may be used. The default value is 1. SelectionSpread Determines the inter-selection spread. Any double greater than or equal to 0.0 may be used. A value of 1.0 specifies that 1.0 times the height of the current selection font will be used for padding The default value is 0.25. SEE ALSO X(8c), xterm(1), bitmap(1), xwm(1), xnwm(1), xhost(1), xclock(1), xload(1), xset(1), keycomp(1), xdemo(1), biff(1), qv(4), vs(4), init(8), ttys(5), uwm(1), xrefresh(1), xwininfo(1), ximpv(1), xdvi(1), pikapix(1), xwd(1), xwud(1), xinit(1), xted(1), xdemo(1), Xqvss(8c), Xvs100(8c), Xsun(8c), Xnest(8c) `Xlib - C Language X Interface' AUTHORS It is no longer feasible to list all people who have contri- buted something to X; below is a short list of people who have added significant code to device independent parts of X. Bob Scheifler (MIT-LCS), Jim Gettys (MIT-Project Athena, DEC), Mark Vandevoorde (MIT-Project Athena, DEC), Tony Della Fera (MIT-Project Athena, DEC), Ron Newman (MIT-Project Athena, MIT), Shane Hartman and Stuart Malone (MIT-LCS), Doug Mink (Smithsonian Astrophysical Observatory), Bob McNamara (DEC-MAD), and Stephen Sutphen (University of Alberta). Special thanks must go to Paul Asente (of DECWRL and Stan- ford University), who wrote "W" which saved us much time and energy early in this project, and who is now an active X contributor as well, and Chris Kent (of DECWRL and Purdue University) who both struggled mightily (and won!) to turn the Vs100 into something useful under Unix. We are very grateful for the interest shown by many groups in the country, which has encouraged us to make X more than our personal toy. Great thanks must go to Digital's Ultrix Engineering Group for the QDSS implementation, and to Digital's Workstations Group for the QVSS implementation. Copyright (c) 1984, 1985, 1986 by Massachusetts Institute of Technology. Permission to use, copy, modify, and distribute this Printed 9/15/87 25 January 1986 8 X(1) UNIX Programmer's Manual X(1) software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting docu- mentation, and that the name of M.I.T. not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. M.I.T. makes no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. This software is not subject to any license of the American Telephone and Telegraph Company or of the Regents of the University of California. Printed 9/15/87 25 January 1986 9

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