python tkinter listbox详解

Python Tkinter Listbox是一个Tkinter GUI工具包中的组件，它提供了一个可供用户选择的列表。Listbox可以用来显示一组选项，用户可以从中选择一个或多个选项。Listbox可以与其他Tkinter组件一起使用，例如按钮、标签和文本框等。Listbox可以通过添加、删除和修改列表项来动态更新。它还支持多选和单选模式，可以设置滚动条和选择模式等属性。Listbox是一个非常有用的Tkinter组件，可以用于创建各种类型的GUI应用程序。

相关问题

Python tkinter Listbox

The Listbox widget in tkinter is used to display a list of items. It allows the user to select one or more items from the list. The following code creates a Listbox widget and adds items to it:

import tkinter as tk

root = tk.Tk()

# Create a Listbox widget
listbox = tk.Listbox(root)

# Add items to the Listbox
listbox.insert(0, "Item 1")
listbox.insert(1, "Item 2")
listbox.insert(2, "Item 3")

# Pack the Listbox widget
listbox.pack()

root.mainloop()

In the above code, we first import the tkinter module and create a new instance of the Tk class. We then create a Listbox widget and add items to it using the `insert` method. Finally, we pack the Listbox widget using the `pack` method and start the main event loop using the `mainloop` method of the root window.

We can also bind a function to the Listbox widget to be executed when an item is selected. The following code demonstrates this:

import tkinter as tk

root = tk.Tk()

# Define a function to be called when an item is selected
def on_select(event):
    selected_item = event.widget.get(event.widget.curselection())
    print("Selected item:", selected_item)

# Create a Listbox widget
listbox = tk.Listbox(root)

# Add items to the Listbox
listbox.insert(0, "Item 1")
listbox.insert(1, "Item 2")
listbox.insert(2, "Item 3")

# Bind the on_select function to the Listbox widget
listbox.bind('<<ListboxSelect>>', on_select)

# Pack the Listbox widget
listbox.pack()

root.mainloop()

In the above code, we define a function `on_select` that is called when an item is selected. This function retrieves the selected item using the `curselection` method of the Listbox widget and prints it to the console. We then bind this function to the Listbox widget using the `bind` method and the `<<ListboxSelect>>` event. When an item is selected, the `on_select` function is called and the selected item is printed to the console.

python tkinter listbox

Tkinter 是 Python 标准库中的一个图形用户界面 (GUI) 工具包，Listbox 是 Tkinter 中的一个组件，可用于在 GUI 中显示列表。它提供了一个可滚动的列表框，可用于显示项目列表。

Listbox 组件可用于创建一个列表框，在其中可以显示项目列表。可以使用 insert() 方法将项目插入列表中，使用 delete() 方法删除项目，使用 get() 方法获取列表中的项目。

示例代码：

from tkinter import *
root = Tk()
listbox = Listbox(root)
listbox.pack()
listbox.insert(END, "item1")
listbox.insert(END, "item2")
root.mainloop()

通过这段简单的代码可以展示一个窗口，里面有两个列表项 "item1" "item2"