wm - Communicate with window manager.  http://purl.org/tcl/home/man/tcl8.4/TkCmd/wm.htm holds the standard documentation.

Please add notes on how you make use of the commands below in useful, and perhaps unique, ways.

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   * wm aspect
   * wm client
   * wm colormapwindows
   * wm command
   * wm deiconify
   * wm focusmodel
   * wm frame
   * wm geometry
   * wm grid
   * wm group
   * wm iconbitmap
   * wm iconify
   * wm iconmask
   * wm iconname
   * wm iconposition
   * wm iconwindow
   * wm maxsize
   * wm minsize
   * wm overrideredirect
   * wm positionfrom
   * wm protocol
   * wm resizable
   * wm sizefrom
   * wm state
   * wm title
   * wm transient
   * wm withdraw
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'''wm aspect'''

This allows you to enforce aspect ratios when resizing a window.

Usage:

 wm aspect . <minAspect> <minDenominator> <maxAspect> <maxDenominator>

The window name must always be specified. The aspect ratios must either
be all specifed or all omitted. <minAspect>/<minDenominator> forms
the minimum allowed aspect ratio, and <maxAspect>/maxDenominator> forms
the maximum allowed aspect ratio.

Examples:

 wm aspect . 4 3 4 3
 wm aspect . 3 2 5 2
 wm aspect .
 wm aspect . "" "" "" ""

'''wm aspect . 4 3 4 3'''  will fix the aspect ratio of the window at
4/3. Because the command requires specification of both min and max
aspects, it is necessary to specify the aspect twice.

'''wm aspect . 3 2 5 2'''  will set the minimum aspect ratio at 3/2, and
the maximum at 5/2. When resizing the window, it will be possible to
shape it to any aspect ratio that falls between these two ratios.

'''wm aspect .'''  will return a list of the current aspect settings, or
an empty list if there is no aspect ratio currently set.

'''wm aspect . "" "" "" "" '''  will clear the aspect ratio constraints.
Note that since all four numbers must be specified, you actually have
to pass the command four empty strings.

'''Note:''' This command apparently does not validate its arguments,
and it is possible to confuse the window manager somewhat (or ''severely'') if you specify contradictory ratios, or if you specify a
smaller max aspect than min aspect.

(Can anyone suggest any practical use for this capability?)

(If anyone in charge of this is paying attention here, how about making
it possible to clear the aspect ratio constraints by setting them to
zero?)

-EE
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Here's a note on '''wm withdraw''' from George Petasis in the comp.lang.tcl newsgroup:

I wouldn't advise you to use 
"wm withdraw ." on the "." window. Under some window managers
(especially under unix...) this will prevent dialogs that have as
parent the "." (like error messages) to not show up and block
your app. Better to use something like:

 wm geometry . 1x1+0+0
 wm overrideredirect . 1
 wm transient .

You can even send it out of the visible part of the screen, like
 wm geometry . 1x1+3000+3000

But in any way do not withdraw it :-)
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'''wm protocol''': Use
        wm protocol <window> WM_DELETE_WINDOW {#}
to prevent your window from closing when the [[X]] button is clicked.  More on this subject appears under the title "[Catching window managed events]".
 




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Could someone address monochrome vs multicolor icons and how to use
the appropriate wm command to achieve the difference?
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[Eric Brunel] writes, on news:comp.lang.tcl ,

Since I just spent half an hour to figure out how this works, I thought
someone might be interested. The exact syntax is:
 wm iconbitmap <window> <icoFileName>
and not:
 wm iconbitmap <window> @<icoFileName>
(the "regular" bitmap files required the "@" in front of them and the manual is a tad unclear on this point...).

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