Atom Methods
Atoms are an
X11 concept. They map strings to an integer identifier allocated by
the X server. In the context of Tk, each widget is assigned a
pathname, which is stored as an atom. The atom
has a string name (you can get it for each widget by using the
PathName
method) and a 32-bit ID. These methods
are used internally to handle things such as the selection mechanism.
To get the 32-bit ID for a given widget, send the
name
of the widget to the atom
method:
$id = $widget->atom($widget->PathName);
You can do
the opposite and use the ID to get the name of the atom back. To do
so, use the atomname
method:
$name = $widget->atomname($id);
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