def add_goto_button(self, layout):
goto_button = QtWidgets.QPushButton('&Go to... [G]')
goto_button.setDefault(True)
goto_button.clicked.connect(self.change_address)
layout.addWidget(goto_button)
def add_save_button(self, layout):
save_button = QtWidgets.QPushButton('&Save...')
save_button.clicked.connect(self.save)
layout.addWidget(save_button)
def add_redraw_button(self, layout):
redraw_button = QtWidgets.QPushButton('&Redraw')
redraw_button.clicked.connect(self.draw)
layout.addWidget(redraw_button)