Python 如何在不点击按钮的情况下获得Tkinter刻度值?
如何在不点击按钮的情况下获得Tkinter scale的值 我下面的代码工作正常。。。但我需要一种方法来获取值,而无需单击按钮,当我移动Tkinter标尺时,该按钮会自动更改值Python 如何在不点击按钮的情况下获得Tkinter刻度值?,python,python-3.x,tkinter,Python,Python 3.x,Tkinter,如何在不点击按钮的情况下获得Tkinter scale的值 我下面的代码工作正常。。。但我需要一种方法来获取值,而无需单击按钮,当我移动Tkinter标尺时,该按钮会自动更改值 from tkinter import * def sel(): selection = "Value = " + str(var.get()) label.config(text = selection) root = Tk() var = DoubleVar() scale = S
from tkinter import *
def sel():
selection = "Value = " + str(var.get())
label.config(text = selection)
root = Tk()
var = DoubleVar()
scale = Scale( root, variable = var )
scale.pack(anchor=CENTER)
button = Button(root, text="Get Scale Value", command=sel)
button.pack(anchor=CENTER)
label = Label(root)
label.pack()
root.mainloop()
使用文本变量代替文本参数:
from tkinter import *
root = Tk()
var = DoubleVar()
scale = Scale( root, variable = var )
scale.pack(anchor=CENTER)
label = Label(root, textvariable=var)
label.pack()
root.mainloop()
您可以使用
缩放
对象中的命令
选项:
from tkinter import *
def sel(val=0): # pass new scale value
#selection = "Value = " + str(var.get())
#label.config(text = selection)
label.config(text = val)
root = Tk()
var = DoubleVar()
scale = Scale( root, variable = var, command=sel) # call sel function on change
scale.pack(anchor=CENTER)
button = Button(root, text="Get Scale Value", command=sel)
button.pack(anchor=CENTER)
label = Label(root)
label.pack()
root.mainloop()
您是否知道
缩放
小部件接受命令
选项?