'\"
'\" Copyright (c) 1991-1994 The Regents of the University of California.
'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\" 
'\" SCCS: @(#) wm.n 1.37 96/10/14 11:07:58
'\" 
.so man.macros
.TH wm n 4.3 Tk "Tk Built-In Commands"
.BS
'\" Note:  do not modify the .SH NAME line immediately below!
.SH NAME
wm \- Communicate with window manager
.SH SYNOPSIS
\fBwm\fR \fIoption window \fR?\fIargs\fR?
.BE

.SH DESCRIPTION
.PP
The \fBwm\fR command is used to interact with window managers in
order to control such things as the title for a window, its geometry,
or the increments in terms of which it may be resized.  The \fBwm\fR
command can take any of a number of different forms, depending on
the \fIoption\fR argument.  All of the forms expect at least one
additional argument, \fIwindow\fR, which must be the path name of a
top-level window.
.PP
The legal forms for the \fBwm\fR command are:
.TP
\fBwm aspect \fIwindow\fR ?\fIminNumer minDenom maxNumer maxDenom\fR?
If \fIminNumer\fR, \fIminDenom\fR, \fImaxNumer\fR, and \fImaxDenom\fR
are all specified, then they will be passed to the window manager
and the window manager should use them to enforce a range of
acceptable aspect ratios for \fIwindow\fR.  The aspect ratio of
\fIwindow\fR (width/length) will be constrained to lie
between \fIminNumer\fR/\fIminDenom\fR and \fImaxNumer\fR/\fImaxDenom\fR.
If \fIminNumer\fR etc. are all specified as empty strings, then
any existing aspect ratio restrictions are removed.
If \fIminNumer\fR etc. are specified, then the command returns an
empty string.  Otherwise, it returns
a Tcl list containing four elements, which are the current values
of \fIminNumer\fR, \fIminDenom\fR, \fImaxNumer\fR, and \fImaxDenom\fR
(if no aspect restrictions are in effect, then an empty string is
returned).
.TP
\fBwm client \fIwindow\fR ?\fIname\fR?
If \fIname\fR is specified, this command stores \fIname\fR (which
should be the name of
the host on which the application is executing) in \fIwindow\fR's
\fBWM_CLIENT_MACHINE\fR property for use by the window manager or
session manager.
The command returns an empty string in this case.
If \fIname\fR isn't specified, the command returns the last name
set in a \fBwm client\fR command for \fIwindow\fR.
If \fIname\fR is specified as an empty string, the command deletes the
\fBWM_CLIENT_MACHINE\fR property from \fIwindow\fR.
.TP
\fBwm colormapwindows \fIwindow\fR ?\fIwindowList\fR?
This command is used to manipulate the \fBWM_COLORMAP_WINDOWS\fR
property, which provides information to the window managers about
windows that have private colormaps.
If \fIwindowList\fR isn't specified, the command returns a list
whose elements are the names of the windows in the \fBWM_COLORMAP_WINDOWS\fR
property.
If \fIwindowList\fR is specified, it consists of a list of window
path names;  the command overwrites the \fBWM_COLORMAP_WINDOWS\fR
property with the given windows and returns an empty string.
The \fBWM_COLORMAP_WINDOWS\fR property should normally contain a
list of the internal windows within \fIwindow\fR whose colormaps differ
from their parents.
The order of the windows in the property indicates a priority order:
the window manager will attempt to install as many colormaps as possible
from the head of this list when \fIwindow\fR gets the colormap focus.
If \fIwindow\fR is not included among the windows in \fIwindowList\fR,
Tk implicitly adds it at the end of the \fBWM_COLORMAP_WINDOWS\fR
property, so that its colormap is lowest in priority.
If \fBwm colormapwindows\fR is not invoked, Tk will automatically set
the property for each top-level window to all the internal windows
whose colormaps differ from their parents, followed by the top-level
itself;  the order of the internal windows is undefined.
See the ICCCM documentation for more information on the
\fBWM_COLORMAP_WINDOWS\fR property.
.TP
\fBwm command \fIwindow\fR ?\fIvalue\fR?
If \fIvalue\fR is specified, this command stores \fIvalue\fR in \fIwindow\fR's
\fBWM_COMMAND\fR property for use by the window manager or
session manager and returns an empty string.
\fIValue\fR must have proper list structure;  the elements should
contain the words of the command used to invoke the application.
If \fIvalue\fR isn't specified then the command returns the last value
set in a \fBwm command\fR command for \fIwindow\fR.
If \fIvalue\fR is specified as an empty string, the command
deletes the \fBWM_COMMAND\fR property from \fIwindow\fR.
.TP
\fBwm deiconify \fIwindow\fR
Arrange for \fIwindow\fR to be displayed in normal (non-iconified) form.
This is done by mapping the window.  If the window has never been
mapped then this command will not map the window, but it will ensure
that when the window is first mapped it will be displayed
in de-iconified form.  Returns an empty string.
.TP
\fBwm focusmodel \fIwindow\fR ?\fBactive\fR|\fBpassive\fR?
If \fBactive\fR or \fBpassive\fR is supplied as an optional argument
to the command, then it specifies the focus model for \fIwindow\fR.
In this case the command returns an empty string.  If no additional
argument is supplied, then the command returns the current focus
model for \fIwindow\fR.
An \fBactive\fR focus model means that \fIwindow\fR will claim the
input focus for itself or its descendants, even at times when
the focus is currently in some other application.  \fBPassive\fR means that
\fIwindow\fR will never claim the focus for itself:  the window manager
should give the focus to \fIwindow\fR at appropriate times.  However,
once the focus has been given to \fIwindow\fR or one of its descendants,
the application may re-assign the focus among \fIwindow\fR's descendants.
The focus model defaults to \fBpassive\fR, and Tk's \fBfocus\fR command
assumes a passive model of focusing.
.TP
\fBwm frame \fIwindow\fR
.VS
If \fIwindow\fR has been reparented by the window manager into a
decorative frame, the command returns the platform specific window
identifier for the outermost frame that contains \fIwindow\fR (the
window whose parent is the root or virtual root).  If \fIwindow\fR
hasn't been reparented by the window manager then the command returns
the platform specific window identifier for \fIwindow\fR.
.VE
.TP
\fBwm geometry \fIwindow\fR ?\fInewGeometry\fR?
If \fInewGeometry\fR is specified, then the geometry of \fIwindow\fR
is changed and an empty string is returned.  Otherwise the current
geometry for \fIwindow\fR is returned (this is the most recent
geometry specified either by manual resizing or
in a \fBwm geometry\fR command).  \fINewGeometry\fR has
the form \fB=\fIwidth\fBx\fIheight\fB\(+-\fIx\fB\(+-\fIy\fR, where
any of \fB=\fR, \fIwidth\fBx\fIheight\fR, or \fB\(+-\fIx\fB\(+-\fIy\fR
may be omitted.  \fIWidth\fR and \fIheight\fR are positive integers
specifying the desired dimensions of \fIwindow\fR.  If \fIwindow\fR
is gridded (see GRIDDED GEOMETRY MANAGEMENT below) then the dimensions
are specified in grid units;  otherwise they are specified in pixel
units.  \fIX\fR and \fIy\fR specify the desired location of
\fIwindow\fR on the screen, in pixels.
If \fIx\fR is preceded by \fB+\fR, it specifies
the number of pixels between the left edge of the screen and the left
edge of \fIwindow\fR's border;  if preceded by \fB\-\fR then
\fIx\fR specifies the number of pixels
between the right edge of the screen and the right edge of \fIwindow\fR's
border.  If \fIy\fR is preceded by \fB+\fR then it specifies the
number of pixels between the top of the screen and the top
of \fIwindow\fR's border;  if \fIy\fR is preceded by \fB\-\fR then
it specifies the number of pixels between the bottom of \fIwindow\fR's
border and the bottom of the screen.
If \fInewGeometry\fR is specified as an empty string then any
existing user-specified geometry for \fIwindow\fR is cancelled, and
the window will revert to the size requested internally by its
widgets.
.TP
\fBwm grid \fIwindow\fR ?\fIbaseWidth baseHeight widthInc heightInc\fR?
This command indicates that \fIwindow\fR is to be managed as a
gridded window.
It also specifies the relationship between grid units and pixel units.
\fIBaseWidth\fR and \fIbaseHeight\fR specify the number of grid
units corresponding to the pixel dimensions requested internally
by \fIwindow\fR using \fBTk_GeometryRequest\fR.  \fIWidthInc\fR
and \fIheightInc\fR specify the number of pixels in each horizontal
and vertical grid unit.
These four values determine a range of acceptable sizes for
\fIwindow\fR, corresponding to grid-based widths and heights
that are non-negative integers.
Tk will pass this information to the window manager;  during
manual resizing, the window manager will restrict the window's size
to one of these acceptable sizes.
Furthermore, during manual resizing the window manager will display
the window's current size in terms of grid units rather than pixels.
If \fIbaseWidth\fR etc. are all specified as empty strings, then
\fIwindow\fR will no longer be managed as a gridded window.  If
\fIbaseWidth\fR etc. are specified then the return value is an
empty string.
Otherwise the return value is a Tcl list containing
four elements corresponding to the current \fIbaseWidth\fR,
\fIbaseHeight\fR, \fIwidthInc\fR, and \fIheightInc\fR;  if
\fIwindow\fR is not currently gridded, then an empty string
is returned.
Note: this command should not be needed very often, since the
\fBTk_SetGrid\fR library procedure and the \fBsetGrid\fR option
provide easier access to the same functionality.
.TP
\fBwm group \fIwindow\fR ?\fIpathName\fR?
If \fIpathName\fR is specified, it gives the path name for the leader of
a group of related windows.  The window manager may use this information,
for example, to unmap all of the windows in a group when the group's
leader is iconified.  \fIPathName\fR may be specified as an empty string to
remove \fIwindow\fR from any group association.  If \fIpathName\fR is
specified then the command returns an empty string;  otherwise it
returns the path name of \fIwindow\fR's current group leader, or an empty
string if \fIwindow\fR isn't part of any group.
.TP
\fBwm iconbitmap \fIwindow\fR ?\fIbitmap\fR?
If \fIbitmap\fR is specified, then it names a bitmap in the standard
forms accepted by Tk (see the \fBTk_GetBitmap\fR manual entry for details).
This bitmap is passed to the window manager to be displayed in