Specifies the widget on whose window the WM_COLORMAP_WINDOWS property
will be stored. Must be of class Core or any subclass thereof.
Specifies a list of widgets whose windows are are potentially to be
listed in the WM_COLORMAP_WINDOWS property.
Specifies the number of widgets in list.
returns immediately if widget is not realized or if count
is zero. Otherwise,
constructs an ordered list of windows by examining each widget in
list in turn and ignoring the widget if it is not realized,
or adding the widget's window to the window list if the widget is
realized and its colormap resource is different from the colormap
resources of all widgets whose windows are already on the window
stores the resulting window list in the WM_COLORMAP_WINDOWS property
on the specified widget's window.
X Toolkit Intrinsics - C Language Interface Xlib - C Language X Interface