How to change Tkinter Button state from disabled to normal?

Question

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

The button is currently created in the DISABLED state using the following code:

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

How can I change the state to NORMAL?

Answer 1

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

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

or

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

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

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Also, the right code should be:

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

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().