auto save

client.py

@@ -9,9 +9,14 @@ class Note():       # 便签、笔记
         self.root.geometry('300x340+1000+200')
         self.root.title("我的便签-待办事项")
         self.root.resizable(width=False, height=False)  
+        self.bg_img = tkinter.PhotoImage(file="bg.png")
 
     def show(self):     # 布置窗口界面
         # 输入框
+        self.canvas = tkinter.Canvas(self.root, width=300,
+                      height=340, bg="lightblue")
+        # self.canvas.create_image(0, 0, image=self.bg_img, anchor=NW)
+        self.canvas.place(x=0, y=0)
         self.ent = tkinter.Entry(self.root, show=None, 
                    font=('宋体', 13), bg="snow", width=25)
         self.ent.place(x=10, y=310)