import tkinter
from tkinter import *

alist = ["星期六下午打篮球", "星期天下午和小美一起看电影", 
        "12月18日给蒂法过生日","12.24送妈妈圣诞礼物"]

class Note():
    def __init__(self):
        self.root = tkinter.Tk()
        self.root.geometry('300x340+1000+200')
        self.root.title("我的便签-待办事项")
        self.root.resizable(width=True, height=False)  # True可以拉伸，False不能拉伸
        self.bg_img = tkinter.PhotoImage(file="bg.png")

    def show(self):
        # 画布
        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)
        # 输入框
        self.ent = tkinter.Entry(self.root, show=None,font=('宋体', 13), 
                   bg="snow", width=25)
        self.ent.place(x=10, y=308)
        # 按钮
        self.but = tkinter.Button(self.root,text='添加',font=('宋体', 12),
                   bg="lightblue", width=5,command=self.get_info)
        self.but.place(x=240, y=305)
        self.y = 20
        for info in alist:
            self.canvas.create_text(40,self.y,text=info,font=("宋体",11),anchor=W,fill='#FF9900')
            self.y +=30        
    def get_info(self):
        self.ent.deiete("0","2")

app = Note()
app.show()
app.root.mainloop()