def METHOD_NAME(self, widget):
    # About Dialog usage code
    about = gtk.AboutDialog()
    about.set_program_name("NNStreamer Toolkit")
    about.set_version("0.0.1")
    about.set_authors([
        'Geunsik Lim',
        'Bug Reports and Patches:',
        'MyungJoo Ham', 'Jijoong Moon', 'Sangjung Woo', 'Wook Song', 'Jaeyun Jung', 'Hyoungjoo Ahn',
    ])
    about.set_copyright("(c) Samsung Electronics")
    about.set_comments("About NNStreamer Toolkit")
    about.set_website("https://github.com/nnstreamer/nnstreamer")
    about.run()
    about.destroy()