self.toolbar_frame = tk.Frame(self) self.canvas_frame = tk.Frame(self) self.progressbar_frame = tk.Frame(self) self.toolbar_frame.pack(fill=tk.X) self.canvas_frame.pack(fill=tk.BOTH, expand=tk.TRUE) self.progressbar_frame.pack(fill=tk.X) self.model_loaded = False self.preload_model = open_model self.limited_mode = limited_mode global current_mapper current_mapper = None global current_rendered_model current_rendered_model = None global current_metamodel current_metamodel = None global current_model current_model = None self.destroy()