tkinter实现电子时钟

一 代码

1. import tkinter
2. import threading
3. import datetime
4. import time
6. app = tkinter.Tk()
7. app.overrideredirect(True)#不显示标题栏
8. app.attributes('-alpha',0.9)#半透明
9. app.attributes('-topmost',1)#总是在顶端
10. app.geometry('110x25+100+100')#初始大小与位置
11. labelDateTime = tkinter.Label(app)
12. labelDateTime.pack(fill=tkinter.BOTH, expand=tkinter.YES)
13. labelDateTime.configure(bg ='gray')
15. X = tkinter.IntVar(value=0)#记录鼠标左键按下的位置
16. Y = tkinter.IntVar(value=0)
17. canMove = tkinter.IntVar(value=0)#窗口是否可拖动
18. still = tkinter.IntVar(value=1)#是否仍在运行
20. def onLeftButtonDown(event):
21. app.attributes('-alpha',0.4)#开始拖动时增加透明度
22. X.set(event.x)#鼠标左键按下，记录当前位置
23. Y.set(event.y)
24. canMove.set(1)#并标记窗口可拖动
25. labelDateTime.bind('<Button-1>', onLeftButtonDown)
27. def onLeftButtonUp(event):
28. app.attributes('-alpha',0.9)#停止拖动时恢复透明度
29. canMove.set(0)#鼠标左键抬起，标记窗口不可拖动
30. labelDateTime.bind('<ButtonRelease-1>', onLeftButtonUp)
32. def onLeftButtonMove(event):
33. if canMove.get()==0:
34. return
35. newX = app.winfo_x()+(event.x-X.get())
36. newY = app.winfo_y()+(event.y-Y.get())
37. g ='110x25+'+str(newX)+'+'+str(newY)
38. app.geometry(g)#修改窗口的位置
39. labelDateTime.bind('<B1-Motion>', onLeftButtonMove)
41. def onRightButtonDown(event):
42. still.set(0)
43. t.join(0.2)
44. app.destroy()#关闭窗口
45. labelDateTime.bind('<Button-3>', onRightButtonDown)
47. def nowDateTime():
48. while still.get()==1:
49. now = datetime.datetime.now()
50. s = str(now.year)+'-'+str(now.month)+'-'+str(now.day)+' '
51. s = s+str(now.hour)+':'+str(now.minute)+':'+str(now.second)
52. labelDateTime['text']= s #显示当前时间
53. time.sleep(0.2)
54. t = threading.Thread(target=nowDateTime)
55. t.daemon =True
56. t.start()
58. app.mainloop()

二 运行结果