如何将Tkinter Button的状态从禁用更改为正常? [英] How to change Tkinter Button state from disabled to normal?

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问题描述

发生某些事件时,我需要将状态从DISABLED更改为ButtonNORMAL.

I need to change the state from DISABLED to NORMAL of a Button when some event occurs.

这是我的按钮的当前状态,当前已被禁用:

Here is the current state of my Button, which is currently disabled:

  self.x = Button(self.dialog, text="Download",
                state=DISABLED, command=self.download).pack(side=LEFT)

 self.x(state=NORMAL)  # this does not seem to work

Anyonne可以帮我吗?

Can anyonne help me on how to do that?

推荐答案

您只需要将按钮self.xstate设置为normal:

You simply have to set the state of the your button self.x to normal:

self.x['state'] = 'normal'

self.x.config(state="normal")

此代码将在事件的回调中使用,该事件将导致启用按钮.

This code would go in the callback for the event that will cause the Button to be enabled.

此外,正确的代码应为:

Also, the right code should be:

self.x = Button(self.dialog, text="Download", state=DISABLED, command=self.download)
self.x.pack(side=LEFT)

Button(...).pack()中的方法pack返回None,并且您将其分配给self.x.您实际上想将Button(...)的返回值分配给self.x,然后在下一行中使用self.x.pack().

The method pack in Button(...).pack() returns None, and you are assigning it to self.x. You actually want to assign the return value of Button(...) to self.x, and then, in the following line, use self.x.pack().

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