Method _register

Lib/tkinter/__init__.py:1683–1703

Return a newly created Tcl function. If this function is called, the Python function FUNC will be executed. An optional function SUBST can be given which will be executed before FUNC.

(self, func, subst=None, needcleanup=1)

    _nametowidget = nametowidget

    def _register(self, func, subst=None, needcleanup=1):
        """Return a newly created Tcl function. If this
        function is called, the Python function FUNC will
        be executed. An optional function SUBST can
        be given which will be executed before FUNC."""
        f = CallWrapper(func, subst, self).__call__
        name = repr(id(f))
        try:
            func = func.__func__
        except AttributeError:
            pass
        try:
            name = name + func.__name__
        except AttributeError:
            pass
        self.tk.createcommand(name, f)
        if needcleanup:
            if self._tclCommands is None:
                self._tclCommands = []
            self._tclCommands.append(name)
        return name

    register = _register