python destroy函数_Python Tkinter destroy()用法及代码示例

Tkinter支持多种执行各种任务的方法。它还提供了一些通用方法。

destroy()是一种通用的窗口小部件方法，即我们可以将此方法与任何可用的窗口小部件以及主tkinter窗口一起使用。

用法:

widget_object = Widget(parent, command = widget_class_object.destroy)

此方法可以与after()方法一起使用。

代码1：作为命令传递的destroy()方法

# importing only those functions

# which are needed

from tkinter import *

from tkinter.ttk import *

# creating tkinter window

root = Tk()

# Creating button. In this destroy method is passed

# as command, so as soon as button 1 is pressed root

# window will be destroyed

btn1 = Button(root, text ="Button 1", command = root.destroy)

btn1.pack(pady = 10)

# Creating button. In this destroy method is passed

# as command, so as soon as button 2 is pressed

# button 1 will be destroyed

btn2 = Button(root, text ="Button 2", command = btn1.destroy)

btn2.pack(pady = 10)

# infinite loop

mainloop()

输出：

如您所见，在上面的代码中，在button-2中传递的命令是销毁button-1，因此，一旦您按一下button-2，button-2就会被销毁。

代码2：destroy()方法和after()方法

# importing only those functions

# which are needed

from tkinter import *

from tkinter.ttk import *

# creating tkinter window

root = Tk()

# Creating button. In this destroy method is passed

# as command, so as soon as button 1 is pressed root

# window will be destroyed

btn1 = Button(root, text ="Button 1")

btn1.pack(pady = 10)

# Creating button. In this destroy method is passed

# as command, so as soon as button 2 is pressed

# button 1 will be destroyed

btn2 = Button(root, text ="Button 2")

btn2.pack(pady = 10)

# after method destroying button-1

# and button-2 after certain time

btn1.after(3000, btn1.destroy)

btn2.after(6000, btn2.destroy)

# infinite loop

mainloop()

输出：

从输出中，您可能会看到在一定时间限制后两个小部件都被销毁，只有根窗口将留空。

注意：还有另一种方法quit()它不会销毁小部件，但会退出tcl /tk解释器，即会停止mainloop()。