self.frame.grid_propagate(0) def prevPage(self): if self.activePage > 0: self.activePage -= 1 self.frame.destroy() self.initUI(self.activePage) def nextPage(self): if self.activePage < self.lastPage: self.activePage += 1 self.frame.destroy() self.initUI(self.activePage) if __name__ == "__main__": root = Tk() root.style = Style() root.style.theme_use('clam') root.fontH1 = tkFont.Font(size=15) root.resizable(width=False, height=False) root.title('Gender Sonification') root.geometry('500x600') app = Application(root) app.pack(expand=True, fill=BOTH) root.mainloop()