如何从 Tkinter 滑块(“Scale")中获取价值? [英] How to Get Value Out from the Tkinter Slider ("Scale")?

问题描述

所以，这是我的代码，当我运行它时，滑块的值出现在滑块上方，我想知道有没有办法把那个值取出来?也许让 a=那个值.;)

So, here is the code I have, and as I run it, the value of the slider bar appears above the slider, I wonder is there a way to get that value out? Maybe let a=that value. ;)

from Tkinter import *

control = Tk()
control.geometry("350x200+100+50")

scale = Scale(control,orient=HORIZONTAL,length=300,width=20,sliderlength=10,from_=0,to=1000,tickinterval=100)
scale.pack()

control.mainloop()

推荐答案

要获取修改后的值，请将函数与参数 command 关联.此函数将接收当前值，因此您只需使用它即可.另请注意，在您的代码中，您有 cline3 = Scale(...).pack().cline3 在这种情况下总是 None，因为这是 pack() 返回的内容.

To get the value as it is modified, associate a function with the parameter command. This function will receive the current value, so you just work with it. Also note that in your code you have cline3 = Scale(...).pack(). cline3 is always None in this case, since that is what pack() returns.

import Tkinter

def print_value(val):
    print val

root = Tkinter.Tk()

scale = Tkinter.Scale(orient='horizontal', from_=0, to=128, command=print_value)
scale.pack()

root.mainloop()

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