TVTWM(1)TVTWM(1)NAMEtvtwm - Tom's Virtual Tab Window Manager for the X Window System
SYNTAXtvtwm [-display dpy] [-s] [-m | -M] [-k] [-f initfile] [-v]
DESCRIPTION
Tvtwm is a window manager for the X Window System based on the X11R5
version of twm. It includes a ``Virtual Desktop'' feature that effec‐
tively makes the root window of the screen larger than the physical
limits of the display. To change as little as possible in this manual,
from here on the window manager is referred to as twm.
Twm is a window manager for the X Window System. It provides title‐
bars, shaped windows, several forms of icon management, user-defined
macro functions, click-to-type and pointer-driven keyboard focus, and
user-specified key and pointer button bindings.
This program is usually started by the user's session manager or
startup script. When used from xdm(1) or xinit(1) without a session
manager, twm is frequently executed in the foreground as the last
client. When run this way, exiting twm causes the session to be termi‐
nated (i.e. logged out).
By default, application windows are surrounded by a ``frame'' with a
titlebar at the top and a special border around the window. The title‐
bar contains the window's name, a rectangle that is lit when the window
is receiving keyboard input, and function boxes known as ``titlebut‐
tons'' at the left and right edges of the titlebar.
Pressing pointer Button1 (usually the left-most button unless it has
been changed with xmodmap) on a titlebutton will invoke the function
associated with the button. In the default interface, windows are
iconified by clicking (pressing and then immediately releasing) the
left titlebutton (which looks like a Dot). Conversely, windows are
deiconified by clicking in the associated icon or entry in the icon
manager (see description of the variable ShowIconManager and of the
function f.showiconmgr).
Windows are resized by pressing the right titlebutton (which resembles
a group of nested squares), dragging the pointer over edge that is to
be moved, and releasing the pointer when the outline of the window is
the desired size. Similarly, windows are moved by pressing in the
title or highlight region, dragging a window outline to the new loca‐
tion, and then releasing when the outline is in the desired position.
Just clicking in the title or highlight region raises the window with‐
out moving it.
When new windows are created, twm will honor any size and location
information requested by the user (usually through -geometry command
line argument or resources for the individual applications). Other‐
wise, an outline of the window's default size, its titlebar, and lines
dividing the window into a 3x3 grid that track the pointer are dis‐
played. Clicking pointer Button1 will position the window at the cur‐
rent position and give it the default size. Pressing pointer Button2
(usually the middle pointer button) and dragging the outline will give
the window its current position but allow the sides to be resized as
described above. Clicking pointer Button3 (usually the right pointer
button) will give the window its current position but attempt to make
it long enough to touch the bottom the screen.
OPTIONS
Twm accepts the following command line options:
-display dpy
This option specifies the X server to use.
-s This option indicates that only the default screen (as speci‐
fied by -display or by the DISPLAY environment variable) should
be managed. By default, twm will attempt to manage all screens
on the display.
-m Causes tvtwm to preprocess the .twmrc file using the m4(1)
macro processor.
-M Causes tvtwm not to preprocess the .twmrc file using the m4(1)
macro processor.
-k This option makes twm leave a file in /tmp containing the pre‐
defines that are generated and fed to m4 before your .twmrc
file. Twm passes this file, followed immediately by your
.twmrc file (which may not be called .twmrc. See -f option.),
to m4(1) for preprocessing. If you give twm the -k option, it
will leave a copy of the temporary file as /tmp/twmrc$$ (where
$$ is variable). This is often useful for knowing what you can
use when adding m4 commands and conditions to your .twmrc file.
-f filename
This option specifies the name of the startup file to use. By
default, twm will look in the user's home directory for files
named .twmrc.num (where num is a screen number) or .twmrc.
-v This option indicates that twm should print error messages
whenever an unexpected X Error event is received. This can be
useful when debugging applications but can be distracting in
regular use.
CUSTOMIZATION
Much of twm's appearance and behavior can be controlled by providing a
startup file in one of the following locations (searched in order for
each screen being managed when twm begins):
$HOME/.tvtwmrc.screennumber
The screennumber is a small positive number (e.g. 0, 1, etc.)
representing the screen number (e.g. the last number in the
DISPLAY environment variable host:displaynum.screennum) that
would be used to contact that screen of the display. This is
intended for displays with multiple screens of differing visual
types.
$HOME/.tvtwmrc
This is the usual name for an individual user's startup file.
$HOME/.twmrc.screennumber
Same as .tvtwmrc.screennumber.
$HOME/.twmrc
Same as .tvtwmrc.
/usr/lib/X11/twm/system.twmrc
If neither of the preceding files are found, twm will look in
this file for a default configuration. This is often tailored
by the site administrator to provide convenient menus or famil‐
iar bindings for novice users.
If no startup files are found, twm will use the built-in defaults
described above. The only resource used by twm is bitmapFilePath for a
colon-separated list of directories to search when looking for bitmap
files (for more information, see the Athena Widgets manual and
xrdb(1)).
Twm startup files are logically broken up into three types of specifi‐
cations: Variables, Bindings, Menus. The Variables section must come
first and is used to describe the fonts, colors, cursors, border
widths, icon and window placement, highlighting, autoraising, layout of
titles, warping, use of the icon manager. The Bindings section usually
comes second and is used to specify the functions that should be to be
invoked when keyboard and pointer buttons are pressed in windows,
icons, titles, and frames. The Menus section gives any user-defined
menus (containing functions to be invoked or commands to be executed).
Variable names and keywords are case-insensitive. Strings must be sur‐
rounded by double quote characters (e.g. "blue") and are case-sensi‐
tive. A pound sign (#) outside of a string causes the remainder of the
line in which the character appears to be treated as a comment.
M4 PREPROCESSING
A new feature in this release of tvtwm is that it can use m4(1) to pre-
process it's setup files. When twm is started with the -m option, or
if it was compiled to use m4 by default and the -M option was not spec‐
ified, it will open a file for input as described above. But, it will
process that file through m4 before parsing it. So, you can use m4
macro's to perform operations at runtime. This makes it very easy to
work when you use many different display's, with different characteris‐
tics. For example, If you want to set the lower right section of the
screen to be your IconRegion, (see below for details on the IconRegion
variable) you can use m4 directives and pre-defined symbols to calcu‐
late the region you want. For example:
define(IRegion, translit(eval(WIDTH/3)*eval(HEIGHT/2)+eval(WIDTH-WIDTH/3)-0, *, x))
IconRegion "IRegion" SOUTH EAST 75 25
will define the lower half, and right-hand third of the screen. The
above makes use of symbols that are predefined in m4 by twm. The sym‐
bols WIDTH and HEIGHT are calculated by twm and written into a tempo‐
rary file for m4 to use. The following symbols are predefined by
tvtwm:
SERVERHOST This variable is set to the name of the machine
that is running the X server.
CLIENTHOST The machine that is running the clients. (ie,
twm)
HOSTNAME The canonical hostname running the clients.
(ie. a fully-qualified version of CLIENTHOST)
USER The name of the user running the program. Got‐
ten from the environment.
HOME The user's home directory. Gotten from the
environment.
VERSION The X major protocol version. As seen by Pro‐
tocolVersion(3).
REVISION The X minor protocol revision. As seen by Pro‐
tocolRevision(3).
VENDOR The vendor of your X server. For example: MIT
X Consortium.
RELEASE The release number of your X server. For MIT
X11R5, this is 5.
WIDTH The width of your display in pixels.
HEIGHT The height of your display in pixels.
X_RESOLUTION The X resolution of your display in pixels per
meter.
Y_RESOLUTION The Y resolution of your display in pixels per
meter.
PLANES The number of bit planes your display supports
in the default root window.
BITS_PER_RGB The number of significant bits in an RGB color.
(log base 2 of the number of distinct colors
that can be created. This is often different
from the number of colors that can be displayed
at once.)
TWM_TYPE Tells which twm offshoot is running. It will
always be set to the string "tvtwm" in this
program. This is useful for protecting parts
of your .twmrc file that twm proper won't
understand (like VirtualDesktop) so that it is
still usable with other twm programs.
CLASS Your visual class. Will return one of Stat‐
icGray, GrayScale, StaticColor, PseudoColor,
TrueColor, DirectColor, or, if it cannot deter‐
mine what you have, NonStandard.
COLOR This will be either 'Yes' or 'No'. This is
just a wrapper around the above definition.
Returns 'Yes' on *Color, and 'No' on StaticGray
and GrayScale.
NG_* There will be a large (about 16) number of pre‐
defines that look like NG_EE or NG_AE. These
are for access control. When they are set to
something intelligent, you can protect certain
machines or groups of machines in login menus
by which group of people should be able to
access them. If you place an ifelse(NG_STAFF,
yes, `') in your .twmrc file, and place the
login menu, or the like, in between the quotes,
then it will only be seen by members of the
staff. This is useful when you have a whole
system that include()s a system-wide login
file. This makes it easy to centrally adminis‐
ter things such as login menus, and have all
users notice changes without having to make
them individually. At the moment, there is
little or no functionality in these. If you
are a member of the group "staff", you have
them all set to 'Yes', else, you have only
NG_STD defined to 'Yes'. I plan to make these
symbols meaningful in the near future.
You may well find that if you research the m4(1) manual well, and
understand the power of m4, this will be a very useful and powerful
tool.
Be aware that m4(1) preprocessing can cause things often found in
.twmrc files to break. For example, quotes and backquotes in shell
commands will be badly messed up by m4's own internal quoting mecha‐
nism. This particular problem can be worked around by placing change‐
quote(,) at the top of your .twmrc file.
VIRTUAL DESKTOP
The Virtual Desktop feature of tvtwm was modeled after the same feature
in swm (Solbourne Window Manager). The Virtual Desktop effectively
makes the ``root'' window of the display larger than the physical
screen size. The Virtual Desktop is panned in one of two ways, either
by executing one of the f.scroll commands or by using the panner.
The panner is a special window that shows a miniature view of windows
on the desktop. The small windows in the panner will have the same
colors as the titlebars and icons of their associated client windows.
The panner is very simple to operate. Mouse button one, pressed inside
the panner, allows you to move the outline indicating your current view
on the desktop. Releasing the button will reposition the desktop to
the point at which the outline is displayed. Mouse button two, pressed
in one of the small "virtual" windows, allows you to move the small
window to another portion of the desktop. If during the move opera‐
tion, you would like to place the window in your current view of the
desktop, simply moving the pointer out of the panner will result in the
window outline changing from the small outline to a large outline show‐
ing the dimensions of the client window. The converse is true of any
move operation started outside of the panner: if the pointer is moved
into the panner window, the outline will change to a small outline
allowing you to place the window anywhere on the desktop. Another fea‐
ture of the panner is that if you resize it, the Virtual Desktop will
resize a corresponding amount. During the resize, the dimensions shown
reflect the Virtual Desktop size.
There are two hints that client windows may use when asking the window
manager to position top level windows: User Specified Position (USPo‐
sition) and Program Specified Position (PPosition). tvtwm handles each
of these two hints in a different manner. If USPosition hints are set,
the window will be placed at the pixel location requested. If PPosi‐
tion hints are set, the window will be placed at the requested location
plus the offsets of the current Virtual Desktop position. For example,
if the desktop is positioned at +100+300 and a window is mapped at
+100+100 with PPosition hints set, the window would be placed at
+200+400 on the Virtual Desktop.
Along with the Virtual Desktop comes a concept called ``sticky'' win‐
dows. Sticky windows can be thought of as stuck to the glass of the
display. Sticky windows do not scroll out of view when the desktop is
scrolled.
VARIABLES
Many of the aspects of twm's user interface are controlled by variables
that may be set in the user's startup file. Some of the options are
enabled or disabled simply by the presence of a particular keyword.
Other options require keywords, numbers, strings, or lists of all of
these.
Lists are surrounded by braces and are usually separated by whitespace
or a newline. For example:
AutoRaise { "emacs" "XTerm" "Xmh" }
or
AutoRaise
{
"emacs"
"XTerm"
"Xmh"
}
When a variable containing a list of strings representing windows is
searched (e.g. to determine whether or not to enable autoraise as shown
above), a string must be an exact, case-sensitive match to the window's
name name (given by the WM_NAME window property), resource name or
class name (both given by the WM_CLASS window property). The preceding
example would enable autoraise on windows named ``emacs'' as well as
any xterm (since they are of class ``XTerm'') or xmh windows (which are
of class ``Xmh'').
String arguments that are interpreted as filenames (see the Pixmaps,
Cursors, and IconDirectory below) will prepend the user's directory
(specified by the HOME environment variable) if the first character is
a tilde (~). If, instead, the first character is a colon (:), the name
is assumed to refer to one of the internal bitmaps that are used to
create the default titlebars symbols: :xlogo or :iconify (both refer
to the X used for the iconify button), :resize (the nested squares used
by the resize button), and :question (the question mark used for non-
existent bitmap files).
The following variables may be specified at the top of a twm startup
file. Lists of Window name prefix strings are indicated by win-list.
Optional arguments are shown in square brackets:
AutoRaise { win-list }
This variable specifies a list of windows that should automati‐
cally be raised whenever the pointer enters the window. This
action can be interactively enabled or disabled on individual
windows using the function f.autoraise.
AutoRelativeResize
This variable indicates that dragging out a window size (either
when initially sizing the window with pointer Button2 or when
resizing it) should not wait until the pointer has crossed the
window edges. Instead, moving the pointer automatically causes
the nearest edge or edges to move by the same amount. This
allows the resizing windows that extend off the edge of the
screen. If the pointer is in the center of the window, or if
the resize is begun by pressing a titlebutton, twm will still
wait for the pointer to cross a window edge (to prevent acci‐
dents). This option is particularly useful for people who like
the press-drag-release method of sweeping out window sizes.
BorderColor string [{ wincolorlist }]
This variable specifies the default color of the border to be
placed around all non-iconified windows, and may only be given
within a Color or Monochrome list. The optional wincolorlist
specifies a list of window and color name pairs for specifying
particular border colors for different types of windows. For
example:
BorderColor "gray50"
{
"XTerm" "red"
"xmh" "green"
}
The default is "black".
BorderTileBackground string [{ wincolorlist }]
This variable specifies the default background color in the
gray pattern used in unhighlighted borders (only if NoHighlight
hasn't been set), and may only be given within a Color or Mono‐
chrome list. The optional wincolorlist allows per-window col‐
ors to be specified. The default is "white".
BorderTileForeground string [{ wincolorlist }]
This variable specifies the default foreground color in the
gray pattern used in unhighlighted borders (only if NoHighlight
hasn't been set), and may only be given within a Color or Mono‐
chrome list. The optional wincolorlist allows per-window col‐
ors to be specified. The default is "black".
BorderWidth pixels
This variable specifies the width in pixels of the border sur‐
rounding all client window frames if ClientBorderWidth has not
been specified. This value is also used to set the border size
of windows created by twm (such as the icon manager). The
default is 2.
ButtonIndent pixels
This variable specifies the amount by which titlebuttons should
be indented on all sides. Positive values cause the buttons to
be smaller than the window text and highlight area so that they
stand out. Setting this and the TitleButtonBorderWidth vari‐
ables to 0 makes titlebuttons be as tall and wide as possible.
The default is 1.
ClientBorderWidth
This variable indicates that border width of a window's frame
should be set to the initial border width of the window, rather
than to the value of BorderWidth.
Color { colors-list }
This variable specifies a list of color assignments to be made
if the default display is capable of displaying more than sim‐
ple black and white. The colors-list is made up of the follow‐
ing color variables and their values: DefaultBackground,
DefaultForeground, MenuBackground, MenuForeground, MenuTitle‐
Background, MenuTitleForeground, and MenuShadowColor. Virtu‐
alDesktopBackground. VirtualDesktopForeground. PannerBack‐
ground. PannerForeground. The following color variables may
also be given a list of window and color name pairs to allow
per-window colors to be specified (see BorderColor for
details): BorderColor, IconManagerHighlight, BorderTitleBack‐
ground, BorderTitleForeground, TitleBackground, TitleFore‐
ground, IconBackground, IconForeground, IconBorderColor, Icon‐
ManagerBackground, and IconManagerForeground. VirtualBack‐
ground, and VirtualForeground. For example:
Color
{
MenuBackground "gray50"
MenuForeground "blue"
BorderColor "red" { "XTerm" "yellow" }
TitleForeground "yellow"
TitleBackground "blue"
}
All of these color variables may also be specified for the
Monochrome variable, allowing the same initialization file to
be used on both color and monochrome displays.
ConstrainedMoveTime milliseconds
This variable specifies the length of time between button
clicks needed to begin a constrained move operation. Double
clicking within this amount of time when invoking f.move will
cause the window only be moved in a horizontal or vertical
direction. Setting this value to 0 will disable constrained
moves. The default is 400 milliseconds.
Cursors { cursor-list }
This variable specifies the glyphs that twm should use for var‐
ious pointer cursors. Each cursor may be defined either from
the cursor font or from two bitmap files. Shapes from the cur‐
sor font may be specified directly as:
cursorname "string"
where cursorname is one of the cursor names listed below, and
string is the name of a glyph as found in the file
/usr/include/X11/cursorfont.h (without the ``XC_'' prefix). If
the cursor is to be defined from bitmap files, the following
syntax is used instead:
cursorname "image" "mask"
The image and mask strings specify the names of files contain‐
ing the glyph image and mask in bitmap(1) form. The bitmap
files are located in the same manner as icon bitmap files. The
following example shows the default cursor definitions:
Cursors
{
Frame "top_left_arrow"
Title "top_left_arrow"
Icon "top_left_arrow"
IconMgr "top_left_arrow"
Move "fleur"
Resize "fleur"
Menu "sb_left_arrow"
Button "hand2"
Wait "watch"
Select "dot"
Destroy "pirate"
}
DecorateTransients
This variable indicates that transient windows (those contain‐
ing a WM_TRANSIENT_FOR property) should have titlebars. By
default, transients are not reparented.
DefaultBackground string
This variable specifies the background color to be used for
sizing and information windows. The default is "white".
DefaultForeground string
This variable specifies the foreground color to be used for
sizing and information windows. The default is "black".
DontIconifyByUnmapping { win-list }
This variable specifies a list of windows that should not be
iconified by simply unmapping the window (as would be the case
if IconifyByUnmapping had been set). This is frequently used
to force some windows to be treated as icons while other win‐
dows are handled by the icon manager.
DontInterpolateTitles
This variable specifies a modification to the InterpolateMenu‐
Colors behavior. It will cause twm to not apply color interpo‐
lation to any titles in the middle of the menu. So, f.title
strings that appear in the middle of the menu (ie, without a
specific color defined for them) will inherit the default Menu‐
Title foreground and background colors.
DontMoveOff
This variable indicates that windows should not be allowed to
be moved off the screen. It can be overridden by the f.force‐
move function.
DontSqueezeTitle [{ win-list }]
This variable indicates that titlebars should not be squeezed
to their minimum size as described under SqueezeTitle below.
If the optional window list is supplied, only those windows
will be prevented from being squeezed.
ForceIcons
This variable indicates that icon pixmaps specified in the
Icons variable should override any client-supplied pixmaps.
FramePadding pixels
This variable specifies the distance between the titlebar deco‐
rations (the button and text) and the window frame. The
default is 2 pixels.
IconBackground string [{ win-list }]
This variable specifies the background color of bitmap icons,
and may only be specified inside of a Color or Monochrome list.
This value is ignored when the icon is an Xpm format pixmap, as
they have their own colors. The optional win-list is a list of
window names and colors so that per-window colors may be speci‐
fied. See the BorderColor variable for a complete description
of the win-list. The default is "white".
IconBorderColor string [{ win-list }]
This variable specifies the color of the border used for icon
windows, and may only be specified inside of a Color or Mono‐
chrome list. This option only has an effect on icon windows
that don't have their own shape mask (ie, only on rectangular
icons). The optional win-list is a list of window names and
colors so that per-window colors may be specified. See the
BorderColor variable for a complete description of the win-
list. The default is "black".
IconBorderWidth pixels
This variable specifies the width in pixels of the border sur‐
rounding icon windows. The default is 2.
IconDirectory string
This variable specifies the directory that should be searched
if a bitmap file cannot be found in any of the directories in
the bitmapFilePath resource. This is generally a poor way to
do things. It is much better to set your bitmapFilePath
resource to what you want it to be in your resources file.
IconFont string
This variable specifies the font to be used to display icon
names within icons. The default is "variable".
IconForeground string [{ win-list }]
This variable specifies the foreground color to be used when
displaying bitmap icons, and may only be specified inside of a
Color or Monochrome list. This value is ignored when the icon
is an Xpm format pixmap, as they have their own colors. The
optional win-list is a list of window names and colors so that
per-window colors may be specified. See the BorderColor vari‐
able for a complete description of the win-list. The default
is "black".
IconifyByUnmapping [{ win-list }]
This variable indicates that windows should be iconified by
being unmapped without trying to map any icons. This assumes
that the user will remap the window through the icon manager,
the f.warpto function, or the TwmWindows menu. If the optional
win-list is provided, only those windows will be iconified by
simply unmapping. Windows that have both this and the IconMan‐
agerDontShow options set may not be accessible if no binding to
the TwmWindows menu is set in the user's startup file.
IconManagerBackground string [{ win-list }]
This variable specifies the background color to use for icon
manager entries, and may only be specified inside of a Color or
Monochrome list. The optional win-list is a list of window
names and colors so that per-window colors may be specified.
See the BorderColor variable for a complete description of the
win-list. The default is "white".
IconManagerDontShow [{ win-list }]
This variable indicates that the icon manager should not dis‐
play any windows. If the optional win-list is given, only
those windows will not be displayed. This variable is used to
prevent windows that are rarely iconified (such as xclock or
xload) from taking up space in the icon manager.
IconManagerFont string
This variable specifies the font to be used when displaying
icon manager entries. The default is "variable".
IconManagerForeground string [{ win-list }]
This variable specifies the foreground color to be used when
displaying icon manager entries, and may only be specified
inside of a Color or Monochrome list. The optional win-list is
a list of window names and colors so that per-window colors may
be specified. See the BorderColor variable for a complete
description of the win-list. The default is "black".
IconManagerGeometry string [ columns ]
This variable specifies the geometry of the icon manager win‐
dow. The string argument is standard geometry specification
that indicates the initial full size of the icon manager. The
icon manager window is then broken into columns pieces and
scaled according to the number of entries in the icon manager.
Extra entries are wrapped to form additional rows. The default
number of columns is 1.
IconManagerHighlight string [{ win-list }]
This variable specifies the border color to be used when high‐
lighting the icon manager entry that currently has the focus,
and can only be specified inside of a Color or Monochrome list.
The optional win-list is a list of window names and colors so
that per-window colors may be specified. See the BorderColor
variable for a complete description of the win-list. The
default is "black".
IconManagers { iconmgr-list }
This variable specifies a list of icon managers to create.
Each item in the iconmgr-list has the following format:
"winname" ["iconname"] "geometry" columns
where winname is the name of the windows that should be put
into this icon manager, iconname is the name of that icon man‐
ager window's icon, geometry is a standard geometry specifica‐
tion, and columns is the number of columns in this icon manager
as described in IconManagerGeometry. For example:
IconManagers
{
"XTerm" "=300x5+800+5" 5
"myhost" "=400x5+100+5" 2
}
Clients whose name or class is ``XTerm'' will have an entry
created in the ``XTerm'' icon manager. Clients whose name was
``myhost'' would be put into the ``myhost'' icon manager.
IconManagerShow { win-list }
This variable specifies a list of windows that should appear in
the icon manager. When used in conjunction with the IconMan‐
agerDontShow variable, only the windows in this list will be
shown in the icon manager.
IconRegion geomstring vgrav hgrav gridwidth gridheight
This variable specifies an area on the root window in which
icons are placed if no specific icon location is provided by
the client. The geomstring is a quoted string containing a
standard geometry specification. If more than one IconRegion
lines are given, icons will be put into the succeeding icon
regions when the first is full. The vgrav argument should be
either North or South and control and is used to control
whether icons are first filled in from the top or bottom of the
icon region. Similarly, the hgrav argument should be either
East or West and is used to control whether icons should be
filled in from left from the right. Icons are laid out within
the region in a grid with cells gridwidth pixels wide and grid‐
height pixels high.
Icons { win-list }
This variable specifies a list of window names and the
pixmap/bitmap filenames that should be used as their icons.
For example:
Icons
{
"XTerm" "xterm.icon"
"xfd" "xfd_icon"
"xeyes" "xeyes.xpm"
}
Windows that match ``XTerm'' and would not be iconified by
unmapping, and would try to use the icon pixmap/bitmap in the
file ``xterm.icon''. If ForceIcons is specified, this bitmap
will be used even if the client has requested its own icon
pixmap.
IconTitle { win-list }
This variable specifies a list of clients that will have the
icon name displayed below the icon and is used to request icon
titles on specific windows when NoIconTitle has been set.
InterpolateMenuColors
This variable indicates that menu entry colors should be inter‐
polated between entry specified colors. In the example below:
Menu "mymenu"
{
"Title" ("black":"red") f.title
"entry1" f.nop
"entry2" f.nop
"entry3" ("white":"green") f.nop
"entry4" f.nop
"entry5" ("red":"white") f.nop
}
the foreground colors for ``entry1'' and ``entry2'' will be
interpolated between black and white, and the background colors
between red and green. Similarly, the foreground for
``entry4'' will be half-way between white and red, and the
background will be half-way between green and white.
ListRings
This variable indicates that duplicate list entries will be
handled in a ring like manner. In the example below:
SqueezeTitle
{
"XTerm" right 0 0
"XTerm" center 0 0
"XTerm" left 0 0
}
the first xterm created will have its tab on the left side of
the window. The second xterm will have the tab in the center,
and the third on the right. The forth will receive it on the
left.
MakeTitle { win-list }
This variable specifies a list of windows on which a titlebar
should be placed and is used to request titles on specific win‐
dows when NoTitle has been set.
MaxWindowSize string
This variable specifies a geometry in which the width and
height give the maximum size for a given window. This is typi‐
cally used to restrict windows to the size of the screen. The
default is "30000x30000".
MenuBackground string
This variable specifies the background color used for menus,
and can only be specified inside of a Color or Monochrome list.
The default is "white".
MenuFont string
This variable specifies the font to use when displaying menus.
The default is "variable".
MenuForeground string
This variable specifies the foreground color used for menus,
and can only be specified inside of a Color or Monochrome list.
The default is "black".
MenuShadowColor string
This variable specifies the color of the shadow behind pull-
down menus and can only be specified inside of a Color or Mono‐
chrome list. The default is "black".
MenuTitleBackground string
This variable specifies the background color for f.title
entries in menus, and can only be specified inside of a Color
or Monochrome list. The default is "white".
MenuTitleFont string
This variable specifies the font to be used in menu titles.
MenuTitleForeground string
This variable specifies the foreground color for f.title
entries in menus and can only be specified inside of a Color or
Monochrome list. The default is "black".
Monochrome { colors }
This variable specifies a list of color assignments that should
be made if the screen has a depth of 1. See the description of
Colors.
MoveDelta pixels
This variable specifies the number of pixels the pointer must
move before the f.move function starts working. Also see the
f.deltastop function. The default is one pixel.
NoBackingStore
This variable indicates that twm's menus should not request
backing store to minimize repainting of menus. This is typi‐
cally used with servers that can repaint faster than they can
handle backing store.
NoCaseSensitive
This variable indicates that case should be ignored when sort‐
ing icon names in an icon manager or window names in the TWM
Windows menu. This option is typically used with applications
that capitalize the first letter of their icon name.
NoDefaults
This variable indicates that twm should not supply the default
titlebuttons and bindings. This option should only be used if
the startup file contains a completely new set of bindings and
definitions.
NoGrabServer
This variable indicates that twm should not grab the server
when popping up menus and moving opaque windows.
NoHighlight [{ win-list }]
This variable indicates that borders should not be highlighted
to track the location of the pointer. If the optional win-list
is given, highlighting will only be disabled for those windows.
When the border is highlighted, it will be drawn in the current
BorderColor. When the border is not highlighted, it will be
stippled with an gray pattern using the current BorderTileFore‐
ground and BorderTileBackground colors.
NoIconManagers
This variable indicates that no icon manager should be created.
NoIconTitle [{ win-list }]
This variable indicates that icons should not display the icon
name of the client. If the optional win-list is given, only
those clients will not have icon titles. IconTitle may be used
with this option to force icon titles to be put on on specific
clients
NoMenuShadows
This variable indicates that menus should not have drop shadows
drawn behind them. This is typically used with slower servers
since it speeds up menu drawing at the expense of making the
menu slightly harder to read.
NoRaiseOnDeiconify
This variable indicates that windows that are deiconified
should not be raised.
NoRaiseOnMove
This variable indicates that windows should not be raised when
moved. This is typically used to allow windows to slide under‐
neath each other.
NoRaiseOnResize
This variable indicates that windows should not be raised when
resized. This is typically used to allow windows to be resized
underneath each other.
NoRaiseOnWarp
This variable indicates that windows should not be raised when
the pointer is warped into them with the f.warpto function. If
this option is set, warping to an occluded window may result in
the pointer ending up in the occluding window instead the
desired window (which causes unexpected behavior with
f.warpring).
NoSaveUnders
This variable indicates that menus should not request save-
unders to minimize window repainting following menu selection.
It is typically used with displays that can repaint faster than
they can handle save-unders.
NoStackMode [{ win-list }]
This variable indicates that client window requests to change
stacking order should be ignored. If the optional win-list is
given, only requests on those windows will be ignored. This is
typically used to prevent applications from relentlessly pop‐
ping themselves to the front of the window stack.
NoTitle [{ win-list }]
This variable indicates that windows should not have titlebars.
If the optional win-list is given, only those windows will not
have titlebars. MakeTitle may be used with this option to
force titlebars to be put on specific windows.
NoTitleFocus
This variable indicates that twm should not set keyboard input
focus to each window as it is entered. Normally, twm sets the
focus so that focus and key events from the titlebar and icon
managers are delivered to the application. If the pointer is
moved quickly and twm is slow to respond, input can be directed
to the old window instead of the new. This option is typically
used to prevent this ``input lag'' and to work around bugs in
older applications that have problems with focus events.
NoTitleHighlight [{ win-list }]
This variable indicates that the highlight area of the title‐
bar, which is used to indicate the window that currently has
the input focus, should not be displayed. If the optional win-
list is given, only those windows will not have highlight
areas. This and the SqueezeTitle options can be set to sub‐
stantially reduce the amount of screen space required by title‐
bars.
OpaqueMove
This variable indicates that the f.move function should actu‐
ally move the window instead of just an outline so that the
user can immediately see what the window will look like in the
new position. This option is typically used on fast displays
(particularly if NoGrabServer is set).
PannerBackgroundPixmap string
This variable specifies the filename of a pixmap or bitmap file
to be used as the background image of the panner. If this file
is a bitmap, the PannerBackground and PannerForeground colors
are used when constructing the background.
PannerGeometry string
This variable specifies the position of the Virtual Desktop
panner. The default geometry is "-0-0".
PannerOpaqueScroll
This variable causes the panner to scroll the Virtual Desktop
opaquely. This variable only takes effect if the StickyAbove
variable is also set.
PannerScale scale
This variable specifies that scale of the Virtual Desktop Pan‐
ner in relation to the actual screen. The default scale is 20.
PannerState string
This variable specifies the initial state of the Virtual Desk‐
top panner window. Possible initial state values include "nor‐
mal", "iconic", or "withdrawn". The default initial state is
"normal".
Pixmaps { pixmaps }
This variable specifies a list of pixmaps that define the
appearance of various images. Each entry is a keyword indicat‐
ing the pixmap to set, followed by a string giving the name of
the bitmap file. The following pixmaps may be specified:
Pixmaps
{
VirtualDesktopBackgroundPixmap "/homes/davis/pictures/background.gif"
PannerBackgroundPixmap "panner.xpm"
TitleHighlight "gray1"
}
The default for TitleHighlight is to use an even stipple pat‐
tern. The VirtualDesktopBackgroundPixmap and PannerBackground‐
Pixmap pixmaps can be set as detailed in each of their own sec‐
tions.
RandomPlacement
This variable indicates that windows with no specified geometry
should should be placed in a pseudo-random location instead of
having the user drag out an outline.
ResizeFont string
This variable specifies the font to be used for in the dimen‐
sions window when resizing windows. The default is "fixed".
RestartPreviousState
This variable indicates that twm should attempt to use the
WM_STATE property on client windows to tell which windows
should be iconified and which should be left visible. This is
typically used to try to regenerate the state that the screen
was in before the previous window manager was shutdown.
SaveColor { colors-list }
This variable indicates a list of color assignments to be
stored as pixel values in the root window property _MIT_PRIOR‐
ITY_COLORS. Clients may elect to preserve these values when
installing their own colormap. Note that use of this mechanism
is a way for an application to avoid the "technicolor" problem,
whereby useful screen objects such as window borders and title‐
bars disappear when a programs custom colors are installed by
the window manager. For example:
SaveColor
{
BorderColor
TitleBackground
TitleForeground
"red"
"green"
"blue"
}
This would place on the root window 3 pixel values for borders
and titlebars, as well as the three color strings, all taken
from the default colormap.
ScrollDistanceX percentage
This variable specifies the amount (as a percentage of the
screen width) to move when one of the scroll functions f.scrol‐
lleft or f.scrollright is called.
ScrollDistanceY percentage
This variable specifies the amount (as a percentage of the
screen height) to move when one of the scroll functions
f.scrollup or f.scrolldown is called.
ShowIconManager
This variable indicates that the icon manager window should be
displayed when twm is started. It can always be brought up
using the f.showiconmgr function.
ShowVirtualNames
This variable causes client window names to be displayed in the
small virtual windows inside the Virtual Desktop panner. The
names will be displayed using the current VirtualFont.
SortIconManager
This variable indicates that entries in the icon manager should
be sorted alphabetically rather than by simply appending new
windows to the end.
SqueezeTitle [{ squeeze-list }]
This variable indicates that twm should attempt to use the
SHAPE extension to make titlebars occupy only as much screen
space as they need, rather than extending all the way across
the top of the window. The optional squeeze-list may be used
to control the location of the squeezed titlebar along the top
of the window. It contains entries of the form:
"name" justification num denom
where name is a window name, justification is either left, cen‐
ter, or right, and num and denom are numbers specifying a ratio
giving the relative position about which the titlebar is justi‐
fied. The ratio is measured from left to right if the numera‐
tor is positive, and right to left if negative. A denominator
of 0 indicates that the numerator should be measured in pixels.
For convenience, the ratio 0/0 is the same as 1/2 for center
and -1/1 for right. For example:
SqueezeTitle
{
"XTerm" left 0 0
"xterm1" left 1 3
"xterm2" left 2 3
"oclock" center 0 0
"emacs" right 0 0
}
The DontSqueezeTitle list can be used to turn off squeezing on
certain titles.
StartIconified [{ win-list }]
This variable indicates that client windows should initially be
left as icons until explicitly deiconified by the user. If the
optional win-list is given, only those windows will be started
iconic. This is useful for programs that do not support an
-iconic command line option or resource.
StayUpMenus
This variable alters menu interaction. By default, a menu item
is selected when a mouse button is released over it. This
variable causes menu items to be selected on the next button
press event.
Sticky [{ win-list }]
This variable is a list of client windows that will be sticky
by default. See the VIRTUAL DESKTOP section for a full
description of sticky windows.
StickyAbove
This variable causes sticky windows to be physically above non-
sticky windows.
TitleBackground string [{ win-list }]
This variable specifies the background color used in titlebars,
and may only be specified inside of a Color or Monochrome list.
The optional win-list is a list of window names and colors so
that per-window colors may be specified. The default is
"white".
TitleButtonBorderWidth pixels
This variable specifies the width in pixels of the border sur‐
rounding titlebuttons. This is typically set to 0 to allow
titlebuttons to take up as much space as possible and to not
have a border. The default is 1.
TitleFont string
This variable specifies the font to used for displaying window
names in titlebars. The default is "variable".
TitleFontPadding pixels
This variable specifies the number of pixels of padding to be
placed above window titles. This allows for using small fonts
with larger buttons.
TitleForeground string [{ win-list }]
This variable specifies the foreground color used in titlebars,
and may only be specified inside of a Color or Monochrome list.
The optional win-list is a list of window names and colors so
that per-window colors may be specified. The default is
"black".
TitlePadding pixels
This variable specifies the distance between the various but‐
tons, text, and highlight areas in the titlebar. The default
is 8 pixels.
UnknownIcon string
This variable specifies the filename of a bitmap file to be
used as the default icon. This bitmap will be used as the icon
of all clients which do not provide an icon bitmap and are not
listed in the Icons list.
UsePPosition string
This variable specifies whether or not twm should honor pro‐
gram-requested locations (given by the PPosition flag in the
WM_NORMAL_HINTS property) in the absence of a user-specified
position. The argument string may have one of three values:
"off" (the default) indicating that twm should ignore the pro‐
gram-supplied position, "on" indicating that the position
should be used, and "non-zero" indicating that the position
should used if it is other than (0,0). The latter option is
for working around a bug in older toolkits.
VirtualDesktop string
This variable enables the Virtual Desktop feature and specifies
the initial size of the desktop, either in pixels or in inte‐
gral multiples of the screen size. The size is specified as a
standard geometry string. If a width or height value is
smaller than the width or height of the physical display, it is
assumed to mean a multiple of the screen size, otherwise it is
assumed to be in pixels. So to get a 2x2 sized Virtual Desktop
across all platforms, one could use the string "2x2" to enable
the desktop.
VirtualDesktopBackgroundPixmap string
This variable specifies the filename of a image to be used as
the background image of the Virtual Desktop. If you have con‐
figured twm to use xloadimage(1) to load this image, the string
must be a full pathname, or be in the image-path in your
~/.xloadimagerc file. If you have not configured twm to use
xloadimage(1), then it will load a bitmap or pixmap in the tra‐
ditional fashion. If the pixmap you load is a bitmap (one
plane deep), VirtualDesktopBackground and VirtualDesktopFore‐
ground colors are used when constructing the background.
WarpCursor [{ win-list }]
This variable indicates that the pointer should be warped into
windows when they are deiconified. If the optional win-list is
given, the pointer will only be warped when those windows are
deiconified. This will also change the position of the virtual
desktop if the unmapped window wasn't visible from the actual
position.
WrapVirtual
This variable will cause tvtwm's scroll behavior to change
slightly. If this is set, then calls to f.scrollleft,
f.scrollright, f.scrollup, and f.scrolldown, that would move
the panner outside of the virtual desktop, will shift position
to the other end. In effect, "wrap-around" the outside of the
virtual desktop. (This is phrased poorly, and should be
rewritten)
VirtualFont font
This is the font used to display window names in the small win‐
dows inside the panner if the ShowVirtualNames variable is
specified. The default font is "5x8".
WindowRing { win-list }
This variable specifies a list of windows along which the
f.warpring function cycles.
WarpUnmapped
This variable indicates that that the f.warpto function should
deiconify any iconified windows it encounters. This is typi‐
cally used to make a key binding that will pop a particular
window (such as xmh), no matter where it is. The default is
for f.warpto to ignore iconified windows.
XorValue number
This variable specifies the value to use when drawing window
outlines for moving and resizing. This should be set to a
value that will result in a variety of of distinguishable col‐
ors when exclusive-or'ed with the contents of the user's typi‐
cal screen. Setting this variable to 1 often gives nice
results if adjacent colors in the default colormap are dis‐
tinct. By default, twm will attempt to cause temporary lines
to appear at the opposite end of the colormap from the graph‐
ics.
Zoom [ count ]
This variable indicates that outlines suggesting movement of a
window to and from its iconified state should be displayed
whenever a window is iconified or deiconified. The optional
count argument specifies the number of outlines to be drawn.
The default count is 8.
The following variables must be set after the fonts have been assigned,
so it is usually best to put them at the end of the variables or begin‐
ning of the bindings sections:
DefaultFunction function
This variable specifies the function to be executed when a key
or button event is received for which no binding is provided.
This is typically bound to f.nop, f.beep, or a menu containing
window operations.
WindowFunction function
This variable specifies the function to execute when a window
is selected from the TwmWindows menu. If this variable is not
set, the window will be deiconified and raised.
BINDINGS
After the desired variables have been set, functions may be attached
titlebuttons and key and pointer buttons. Titlebuttons may be added
from the left or right side and appear in the titlebar from left-to-
right according to the order in which they are specified. Key and
pointer button bindings may be given in any order.
Titlebuttons specifications must include the name of the pixmap to use
in the button box and the function to be invoked when a pointer button
is pressed within them:
LeftTitleButton "bitmapname" = function
or
RightTitleButton "bitmapname" = function
The bitmapname may refer to one of the built-in bitmaps (which are
scaled to match TitleFont) by using the appropriate colon-prefixed name
described above.
Key and pointer button specifications must give the modifiers that must
be pressed, over which parts of the screen the pointer must be, and
what function is to be invoked. Keys are given as strings containing
the appropriate keysym name; buttons are given as the keywords But‐
ton1-Button5:
"FP1" = modlist : context : function
Button1 = modlist : context : function
The modlist is any combination of the modifier names shift, control,
lock, meta, mod1, mod2, mod3, mod4, or mod5 (which may be abbreviated
as s, c, l, m, m1, m2, m3, m4, m5, respectively) separated by a verti‐
cal bar (|). Similarly, the context is any combination of window,
title, icon, root, frame, iconmgr, their first letters (iconmgr abbre‐
viation is m), or all, separated by a vertical bar. The function is
any of the f. keywords described below. For example, the default
startup file contains the following bindings:
Button1 = : root : f.menu "TwmWindows"
Button1 = m : window | icon : f.function "move-or-lower"
Button2 = m : window | icon : f.iconify
Button3 = m : window | icon : f.function "move-or-raise"
Button1 = : title : f.function "move-or-raise"
Button2 = : title : f.raiselower
Button1 = : icon : f.function "move-or-iconify"
Button2 = : icon : f.iconify
Button1 = : iconmgr : f.iconify
Button2 = : iconmgr : f.iconify
A user who wanted to be able to manipulate windows from the keyboard
could use the following bindings:
"F1" = : all : f.iconify
"F2" = : all : f.raiselower
"F3" = : all : f.warpring "next"
"F4" = : all : f.warpto "xmh"
"F5" = : all : f.warpto "emacs"
"F6" = : all : f.colormap "next"
"F7" = : all : f.colormap "default"
"F20" = : all : f.warptoscreen "next"
"Left" = m : all : f.backiconmgr
"Right" = m | s : all : f.forwiconmgr
"Up" = m : all : f.upiconmgr
"Down" = m | s : all : f.downiconmgr
Twm provides many more window manipulation primitives than can be con‐
veniently stored in a titlebar, menu, or set of key bindings. Although
a small set of defaults are supplied (unless the NoDefaults is speci‐
fied), most users will want to have their most common operations bound
to key and button strokes. To do this, twm associates names with each
of the primitives and provides user-defined functions for building
higher level primitives and menus for interactively selecting among
groups of functions.
User-defined functions contain the name by which they are referenced in
calls to f.function and a list of other functions to execute. For
example:
Function "move-or-lower" { f.move f.deltastop f.lower }
Function "move-or-raise" { f.move f.deltastop f.raise }
Function "move-or-iconify" { f.move f.deltastop f.iconify }
Function "restore-colormap" { f.colormap "default" f.lower }
The function name must be used in f.function exactly as it appears in
the function specification.
In the descriptions below, if the function is said to operate on the
selected window, but is invoked from a root menu, the cursor will be
changed to the Select cursor and the next window to receive a button
press will be chosen:
! string
This is an abbreviation for f.exec string.
f.autoraise
This function toggles whether or not the selected window is
raised whenever entered by the pointer. See the description of
the variable AutoRaise.
f.backiconmgr
This function warps the pointer to the previous column in the
current icon manager, wrapping back to the previous row if nec‐
essary.
f.beep This function sounds the keyboard bell.
f.bottomzoom
This function is similar to the f.fullzoom function, but
resizes the window to fill only the bottom half of the screen.
f.circledown
This function lowers the top-most window that occludes another
window.
f.circleup
This function raises the bottom-most window that is occluded by
another window.
f.colormap string
This function rotates the colormaps (obtained from the WM_COL‐
ORMAP_WINDOWS property on the window) that twm will display
when the pointer is in this window. The argument string may
have one of the following values: "next", "prev", and
"default". It should be noted here that in general, the
installed colormap is determined by keyboard focus. A pointer
driven keyboard focus will install a private colormap upon
entry of the window owning the colormap. Using the click to
type model, private colormaps will not be installed until the
user presses a mouse button on the target window.
f.constrainedmove
This function will have approximately the same behavior, except
that the move will be constrained without need for double
clicking.
f.deiconify
This function deiconifies the selected window. If the window
is not an icon or an unmapped window, this function does noth‐
ing.
f.delete
This function sends the WM_DELETE_WINDOW message to the
selected window if the client application has requested it
through the WM_PROTOCOLS window property. The application is
supposed to respond to the message by removing the indicated
window. If the window has not requested WM_DELETE_WINDOW mes‐
sages, the keyboard bell will be rung indicating that the user
should choose an alternative method. Note this is very differ‐
ent from f.destroy. The intent here is to delete a single win‐
dow, not necessarily the entire application.
f.deltastop
This function allows a user-defined function to be aborted if
the pointer has been moved more than MoveDelta pixels. See the
example definition given for Function "move-or-raise" at the
beginning of the section.
f.destroy
This function instructs the X server to close the display con‐
nection of the client that created the selected window. This
should only be used as a last resort for shutting down runaway
clients. See also f.delete.
f.downiconmgr
This function warps the pointer to the next row in the current
icon manger, wrapping to the beginning of the next column if
necessary.
f.exec string
This function passes the argument string to /bin/sh for execu‐
tion. In multiscreen mode, if string starts a new X client
without giving a display argument, the client will appear on
the screen from which this function was invoked.
f.focus This function toggles the keyboard focus of the server to the
selected window, changing the focus rule from pointer-driven if
necessary. If the selected window already was focused, this
function executes an f.unfocus.
f.forcemove
This function is like f.move except that it ignores the Dont‐
MoveOff variable.
f.forwiconmgr
This function warps the pointer to the next column in the cur‐
rent icon manager, wrapping to the beginning of the next row if
necessary.
f.fullzoom
This function resizes the selected window to the full size of
the display or else restores the original size if the window
was already zoomed.
f.function string
This function executes the user-defined function whose name is
specified by the argument string.
f.hbzoom
This function is a synonym for f.bottomzoom.
f.hideiconmgr
This function unmaps the current icon manager.
f.horizoom
This variable is similar to the f.zoom function except that the
selected window is resized to the full width of the display.
f.htzoom
This function is a synonym for f.topzoom.
f.hzoom This function is a synonym for f.horizoom.
f.iconify
This function iconifies or deiconifies the selected window or
icon, respectively.
f.identify
This function displays a summary of the name and geometry of
the selected window. Clicking the pointer or pressing a key in
the window will dismiss it.
f.lefticonmgr
This function similar to f.backiconmgr except that wrapping
does not change rows.
f.leftzoom
This variable is similar to the f.bottomzoom function but
causes the selected window is only resized to the left half of
the display.
f.lower This function lowers the selected window.
f.menu string
This function invokes the menu specified by the argument
string. Cascaded menus may be built by nesting calls to
f.menu.
f.menufunc string1 : string2
This functions invokes a menu like f.menu, but if the user does
not pop up the menu menu "string1" the function string2 will
be called.
f.move This function drags an outline of the selected window (or the
window itself if the OpaqueMove variable is set) until the
invoking pointer button is released. Double clicking within
the number of milliseconds given by ConstrainedMoveTime warps
the pointer to the center of the window and constrains the move
to be either horizontal or vertical depending on which grid
line is crossed. To abort a move, press another button before
releasing the first button.
f.nexticonmgr
This function warps the pointer to the next icon manager con‐
taining any windows on the current or any succeeding screen.
f.nop This function does nothing and is typically used with the
DefaultFunction or WindowFunction variables or to introduce
blank lines in menus.
f.opaquemove
This function will exact as does f.move, but it will do an
opaque move regardless of whether OpaqueMove is set or not.
f.panner
This function toggles the display of the panner window.
f.previconmgr
This function warps the pointer to the previous icon manager
containing any windows on the current or preceding screens.
f.quit This function causes twm to restore the window's borders and
exit. If twm is the first client invoked from xdm, this will
result in a server reset.
f.raise This function raises the selected window.
f.raiselower
This function raises the selected window to the top of the
stacking order if it is occluded by any windows, otherwise the
window will be lowered.
f.refresh
This function causes all windows to be refreshed.
f.relativemove string
This function will move the selected window relative to its
current position. The string parameter is a geometry specifi‐
cation indicating how many pixels to move the window. For
example, "+15+0" would move the window fifteen (15) pixels to
the right, and "+5-10" would move the window five (5) pixels
right and ten (10) pixels up.
f.relativeresize
This function will do a resize and behave as if AutoRelativeRe‐
size were set, whether it is or not
f.resize
This function displays an outline of the selected window.
Crossing a border (or setting AutoRelativeResize) will cause
the outline to begin to rubber band until the invoking button
is released. To abort a resize, press another button before
releasing the first button.
f.restart
This function kills and restarts twm.
f.righticonmgr
This function is similar to f.nexticonmgr except that wrapping
does not change rows.
f.rightzoom
This variable is similar to the f.bottomzoom function except
that the selected window is only resized to the right half of
the display.
f.saveyourself
This function sends a WM_SAVEYOURSELF message to the selected
window if it has requested the message in its WM_PROTOCOLS win‐
dow property. Clients that accept this message are supposed to
checkpoint all state associated with the window and update the
WM_COMMAND property as specified in the ICCCM. If the selected
window has not selected for this message, the keyboard bell
will be rung.
f.scroll string
This function scrolls the Virtual Desktop to a specific logical
screen quadrant. The string parameter is a geometry specifica‐
tion indicating how to scroll the desktop. For example, "+0+0"
would scroll the desktop to the home location and "+2+1" would
scroll the desktop to the quadrant in the third logical column
and the second row.
f.scrollback
This function scrolls the Virtual Desktop back to its previous
location.
f.scrolldown
This function scrolls the Virtual Desktop down a fraction of
the height of the screen specified in ScrollDistanceY.
f.scrollhome
This function scrolls the Virtual Desktop to the home location.
f.scrollleft
This function scrolls the Virtual Desktop left a fraction of
the width of the screen specified in ScrollDistanceX.
f.scrollright
This function scrolls the Virtual Desktop right a fraction of
the width of the screen specified in ScrollDistanceX.
f.scrollup
This function scrolls the Virtual Desktop up one a fraction of
the height of the screen specified in ScrollDistanceY.
f.showiconmgr
This function maps the current icon manager.
f.sorticonmgr
This function sorts the entries in the current icon manager
alphabetically. See the variable SortIconManager.
f.stick This function toggles making a window sticky.
f.title This function provides a centered, unselectable item in a menu
definition. It should not be used in any other context.
f.topzoom
This variable is similar to the f.bottomzoom function except
that the selected window is only resized to the top half of the
display.
f.unfocus
This function resets the focus back to pointer-driven. This
should be used when a focused window is no longer desired.
f.upiconmgr
This function warps the pointer to the previous row in the cur‐
rent icon manager, wrapping to the last row in the same column
if necessary.
f.vlzoom
This function is a synonym for f.leftzoom.
f.vrzoom
This function is a synonym for f.rightzoom.
f.warpring string
This function warps the pointer to the next or previous window
(as indicated by the argument string, which may be "next" or
"prev") specified in the WindowRing variable.
f.warpto string
This function warps the pointer to the window which has a name
or class that matches string. If the window is iconified, it
will be deiconified if the variable WarpUnmapped is set or else
ignored. If string is empty (i.e. ""), the current window is
selected. In addition to warping the pointer to the window the
Virtual Desktop will be scrolled to the logical quadrant that
contains the window.
f.warptoiconmgr string
This function warps the pointer to the icon manager entry asso‐
ciated with the window containing the pointer in the icon man‐
ager specified by the argument string. If string is empty
(i.e. ""), the current icon manager is chosen.
f.warptoscreen string
This function warps the pointer to the screen specified by the
argument string. String may be a number (e.g. "0" or "1"), the
word "next" (indicating the current screen plus 1, skipping
over any unmanaged screens), the word "back" (indicating the
current screen minus 1, skipping over any unmanaged screens),
or the word "prev" (indicating the last screen visited.
f.winrefresh
This function is similar to the f.refresh function except that
only the selected window is refreshed.
f.zoom This function is similar to the f.fullzoom function, except
that the only the height of the selected window is changed.
MENUS
Functions may be grouped and interactively selected using pop-up (when
bound to a pointer button) or pull-down (when associated with a title‐
button) menus. Each menu specification contains the name of the menu
as it will be referred to by f.menu, optional default foreground and
background colors, the list of item names and the functions they should
invoke, and optional foreground and background colors for individual
items:
Menu "menuname" [ ("deffore":"defback") ]
{
string1 [ ("fore1":"backn")] function1
string2 [ ("fore2":"backn")] function2
.
.
.
stringN [ ("foreN":"backN")] functionN
}
The menuname is case-sensitive. The optional deffore and defback argu‐
ments specify the foreground and background colors used on a color dis‐
play to highlight menu entries. The string portion of each menu entry
will be the text which will appear in the menu. The optional fore and
back arguments specify the foreground and background colors of the menu
entry when the pointer is not in the entry. These colors will only be
used on a color display. The default is to use the colors specified by
the MenuForeground and MenuBackground variables. The function portion
of the menu entry is one of the functions, including any user-defined
functions, or additional menus.
There is a special menu named TwmWindows which contains the names of
all of the client and twm-supplied windows. Selecting an entry will
cause the WindowFunction to be executed on that window. If WindowFunc‐
tion hasn't been set, the window will be deiconified and raised. If
the Virtual Desktop is enabled, the desktop will also be scrolled to
the logical quadrant that contains the windows.
ICONS
Twm supports several different ways of manipulating iconified windows.
The common pixmap-and-text style may be laid out by hand or automati‐
cally arranged as described by the IconRegion variable. In addition, a
terse grid of icon names, called an icon manager, provides a more effi‐
cient use of screen space as well as the ability to navigate among win‐
dows from the keyboard.
An icon manager is a window that contains names of selected or all win‐
dows currently on the display. In addition to the window name, a small
button using the default iconify symbol will be displayed to the left
of the name when the window is iconified. By default, clicking on an
entry in the icon manager performs f.iconify. To change the actions
taken in the icon manager, use the the iconmgr context when specifying
button and keyboard bindings.
Moving the pointer into the icon manager also directs keyboard focus to
the indicated window (setting the focus explicitly or else sending syn‐
thetic events NoTitleFocus is set). Using the f.upiconmgr, f.downicon‐
mgr f.lefticonmgr, and f.righticonmgr functions, the input focus can be
changed between windows directly from the keyboard.
SIGNALS
It is possible to issue a the equivalent of a f.restart via a unix sig‐
nal. This is intended to ease debugging of twm initialization files.
To force this send a SIGUSR1 to the twm process ID. See man kill(1)
for more details.
BUGS
The resource manager should have been used instead of all of the window
lists.
The IconRegion variable should take a list.
Double clicking very fast to get the constrained move function will
sometimes cause the window to move, even though the pointer is not
moved.
If IconifyByUnmapping is on and windows are listed in IconManager‐
DontShow but not in DontIconifyByUnmapping, they may be lost if they
are iconified and no bindings to f.menu "TwmWindows" or f.warpto are
setup.
FILES
$HOME/.[tv]twmrc.<screen number>
$HOME/.[tv]twmrc
/usr/lib/X11/twm/system.[tv]twmrc
ENVIRONMENT VARIABLES
DISPLAY This variable is used to determine which X server to use. It
is also set during f.exec so that programs come up on the
proper screen.
HOME This variable is used as the prefix for files that begin with a
tilde and for locating the twm startup file.
SEE ALSOX(1), Xserver(1), xdm(1), xrdb(1), m4(1), kill(1)COPYRIGHT
Portions copyright 1988 Evans & Sutherland Computer Corporation; por‐
tions copyright 1989 Hewlett-Packard Company and the Massachusetts
Institute of Technology, See X(1) for a full statement of rights and
permissions.
AUTHORS
Tom LaStrange, Solbourne Computer; Chris Ross, University of Maryland;
Jim Fulton, MIT X Consortium; Steve Pitschke, Stardent Computer; Keith
Packard, MIT X Consortium; Dave Sternlicht, MIT X Consortium; Dave
Payne, Apple Computer.
Virtual Desktop added by Tom LaStrange, Solbourne Computer.
X Version 11 Release 5 TVTWM(1)
