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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def enable_gtk(self, app=None):
 """Enable event loop integration with PyGTK. Parameters app : ignored Ignored, it's only a placeholder to keep the call signature of all gui activation methods consistent, which simplifies the logic of supporting magics. Notes ----- This methods sets the PyOS_InputHook for PyGTK, which allows the PyGTK to integrate with terminal based applications like IPython. """

        from pydev_ipython.inputhookgtk import create_inputhook_gtk
        self.set_inputhook(create_inputhook_gtk(self._stdin_file))
        self._current_gui = GUI_GTK