Re: [Tutor] Update a button content on click
It works fine for me. Except that the button is too big before I press it - I'm not sure why - but after pressing it it shrinks to 4x4 pixels with the image inside.(albeit too small to see!). OK, more experimenting... It seems that Tkinter is smart enough to use characters for sizes when displaying a text label but pixels for images. So in the event handler you need to reset the size. This works for me with a GIF size of 200x100 from tkinter import * root=Tk() photo=PhotoImage(file=r"M:\Photos\TomMcM\Chris.GIF") def ok(): # reset size to pixels for image b1.configure(image=photo, height="90", width="140") # original size in chars b1=Button(root,text=" ", command=ok, height="6", width="20") b1.grid() root.mainloop() # Alan Gauld Author of the Learn To Program website http://www.alan-g.me.uk/ > >From: ANKUR AGGARWAL >To: ALAN GAULD >Cc: tutor@python.org >Sent: Tuesday, 15 February, 2011 17:14:38 >Subject: Re: [Tutor] Update a button content on click > >upper code posted earlier is running fine > > >The problem is in the code below bcoz of the height nd width factor... > >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() > > >On Tue, Feb 15, 2011 at 10:34 PM, ANKUR AGGARWAL >wrote: > >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 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. >>> >> >___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Update a button content on click
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 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 > *To:* ALAN GAULD > *Cc:* tutor@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 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. >> >> > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Update a button content on click
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 >To: ALAN GAULD >Cc: tutor@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 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. >> >___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Update a button content on click
upper code posted earlier is running fine The problem is in the code below bcoz of the height nd width factor... 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() On Tue, Feb 15, 2011 at 10:34 PM, ANKUR AGGARWAL wrote: > 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 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. >> >> > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
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 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. > > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Update a button content on click
> 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. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Update a button content on click
hmmm... i got the point. I applied it in image case. b1=button(root,image=None,height=4,width=4,command=ok) 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. 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. On Tue, Feb 15, 2011 at 5:58 PM, Alan Gauld wrote: > > "ANKUR AGGARWAL" wrote > > > I am looking for a method using Tkinter module to update the button on the >> click. >> > > Define an event handler command for the button. > Lets call it sayHi() > > def sayHi(self): >self.myButton['text'] = 'hi' ># Note:event handlers don't return results so store it as an attribute >self.myButtonResult = 'hi' > > Now create the widget with spam as the handler. > > self.myButton = Button(parent, text='hello', command = spam) > > That's it. > > > the its click should be "hi". I tried it through event handling but failed >> to do so. >> > > It would be more helpful if you posted the code that you tried > and a more detailed explanation of "failed to do so". > What happened? Did it update but not store a value? > Did you get an error message? Did anything happen? > > The more specific information you provide the more likely you > are to get a specific solution that works. > > HTH, > > > -- > Alan Gauld > Author of the Learn to Program web site > http://www.alan-g.me.uk/ > > > ___ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Update a button content on click
"ANKUR AGGARWAL" wrote I am looking for a method using Tkinter module to update the button on the click. Define an event handler command for the button. Lets call it sayHi() def sayHi(self): self.myButton['text'] = 'hi' # Note:event handlers don't return results so store it as an attribute self.myButtonResult = 'hi' Now create the widget with spam as the handler. self.myButton = Button(parent, text='hello', command = spam) That's it. the its click should be "hi". I tried it through event handling but failed to do so. It would be more helpful if you posted the code that you tried and a more detailed explanation of "failed to do so". What happened? Did it update but not store a value? Did you get an error message? Did anything happen? The more specific information you provide the more likely you are to get a specific solution that works. HTH, -- Alan Gauld Author of the Learn to Program web site http://www.alan-g.me.uk/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
