'''wm colormapwindows''' ''window ?windowList?''

This command is used to manipulate the '''WM_COLORMAP_WINDOWS''' property, which provides information to the window managers about windows that have private colormaps. If ''windowList'' isn't specified, the command returns a list whose elements are the names of the windows in the '''WM_COLORMAP_WINDOWS''' property. If ''windowList'' is specified, it consists of a list of window path names; the command overwrites the '''WM_COLORMAP_WINDOWS''' property with the given windows and returns an empty string. The '''WM_COLORMAP_WINDOWS''' property should normally contain a list of the internal windows within ''window'' 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 ''window'' gets the colormap focus. If ''window'' is not included among the windows in ''windowList'', Tk implicitly adds it at the end of the '''WM_COLORMAP_WINDOWS''' property, so that its colormap is lowest in priority. If '''wm colormapwindows''' 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 '''WM_COLORMAP_WINDOWS''' property.

''Do not set this yourself unless you know exactly what you are doing.''

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See also:

   * [wm]
   * [ICCCM]

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