如何在Tkinter组合框中获取选定选项的索引 [英] How to Get Index of Selected Option inTkinter Combobox

问题描述

以下代码使我可以从组合框中打印出选定的值，但是我需要打印（获取）列表中选定项的索引号。

Following code lets me to print out the selected value from the Combobox, but I need to print(get) the indexnumber of selected item in the list. Can you please let me know how to do that?

import Tkinter
import tkMessageBox
from Tkinter import *
import ttk
from ttk import *

app = Tk()

def OptionCallBack(*args):
    print variable.get()

variable = StringVar(app)
variable.set("Select From List")
variable.trace('w', OptionCallBack)

so = ttk.Combobox(app, textvariable=variable)
so.config(values =('Tracing Upstream', 'Tracing Downstream','Find Path'))
so.grid(row=1, column=4, sticky='E', padx=10)


app.mainloop()

推荐答案

在组合框上使用 current 方法。

import Tkinter
import tkMessageBox
from Tkinter import *
import ttk
from ttk import *

app = Tk()

def OptionCallBack(*args):
    print variable.get()
    print so.current()

variable = StringVar(app)
variable.set("Select From List")
variable.trace('w', OptionCallBack)


so = ttk.Combobox(app, textvariable=variable)
so.config(values =('Tracing Upstream', 'Tracing Downstream','Find Path'))
so.grid(row=1, column=4, sticky='E', padx=10)


app.mainloop()

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