[Tutor] Update a button content on click

[ANKUR AGGARWAL]

your code was fine. I am having problem with this code

from Tkinter import *
root=Tk()

photo=PhotoImage(file="Cross.gif")
def ok():
 b1["image"]=photo
b1=Button(root,text="",image=None,height=4,width=4,command=ok)
b1.grid()
root.mainloop()


On Tue, Feb 15, 2011 at 11:20 PM, ALAN GAULD <alan.gauld at btinternet.com>wrote:

> I modified your code slightly for Python 3.1 to this:
>
> #######################
> from tkinter import *
> root=Tk()
>
>
> def ok():
>  b1["image"]=photo
>
> photo=PhotoImage(file=r"M:\Photos\TomMcM\Chris.GIF")
>
> b1=Button(root,text="",image=None,command=ok)
> b1.grid()
>
> root.mainloop()
> #########################
>
> Which works perfectly for me.
> What happens for you?
> Do you get any error messages?
>
> Alan Gauld
> Author of the Learn To Program website
>
> http://www.alan-g.me.uk/
>
>
> *From:* ANKUR AGGARWAL <coolankur2006 at gmail.com>
> *To:* ALAN GAULD <alan.gauld at btinternet.com>
> *Cc:* tutor at python.org
> *Sent:* Tuesday, 15 February, 2011 17:04:06
> *Subject:* Re: [Tutor] Update a button content on click
>
> from Tkinter import *
> root=Tk()
>
> photo=PhotoImage(file="Cross.gif")
> def ok():
>  b1["image"]=photo
>
> b1=Button(root,text="",image=None,command=ok)
> b1.grid()
> root.mainloop()
>
> Here's my code . Not getting the desired output
>
> On Tue, Feb 15, 2011 at 10:26 PM, ALAN GAULD <alan.gauld at btinternet.com>wrote:
>
>> > b1=button(root,image=None,height=4,width=4,command=ok)
>>
>> This says you want the button to e 4 pixels squarte. Is that really
>> what you want?, because....
>>
>>  and then ok defination is as follows :
>>  def ok():
>>   b1["image"]=photo
>>
>> now problem is that after clicking on the button, image is coming
>> up like a flash and then button becomes almost to zero size.
>>
>> Like to 4x4 pixels maybe, just as you asked?
>> What happens if you change the size to something like 40x40?
>>
>> Also in Tkinter to display an image you usually have to firtst create
>> a PhotoImage object and assign that to the image attribute. It's not
>> clear from your code whether you are doing that or not.
>> Is photo a PhotImage object?
>>
>> I want to retain the height=4,width=4 along with the image after
>> clicking on the button. Image size is smaller than the button size.
>>
>> It sounds like your original size is greater than 4x4 and after setting
>> the image it shrinks to 4x4...
>>
>> HTH,
>>
>> Alan G.
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/tutor/attachments/20110215/75b748da/attachment.html>