🔒 Buttons are not set pixel length tkinter | Python | Page 1

granite raptor Dec 7, 2025, 11:03 AM

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I have button widigets grided to a frame then the frame is packed to the screen. The buttons are added with an image of 1x1 pixle thewn use width=121 but when on screen they take up more space than the set width?

root.geometry("363x250")

pixel = PhotoImage(width=1, height=1)
buttonOptions = Button(buttonFrame, text='Settings',image=pixel, width=121,padx=0, height=30,compound = 'c', command=None)
buttonNextQuestion = Button(buttonFrame,image=pixel, height=30, width=121,padx=0,compound = 'c', text="Next Question", command=None)
buttonPreviousQuestion = Button(buttonFrame,image=pixel, height=30, width=121,padx=0,compound = 'c', text="Previous Question", command=None)
buttonCheckAnswer = Button(buttonFrame,image=pixel, height=30, width=121,padx=0,compound = 'c', text="CheckAnswer", command=lambda: checkAnswerFunction())

buttonOptions.grid(row=0, column=0)
buttonCheckAnswer.grid(row=0, column=1)
buttonNextQuestion.grid(row=0, column=2)

displayedFrame = radioButtonFrame
buttonFrame.grid(row=0, column=0)
displayedFrame.grid(row=1, column=0)

visual galeBOT Dec 7, 2025, 11:03 AM

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granite raptor I have button widigets grided to a frame then the frame is packed to the screen....

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@granite raptor

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granite raptor Dec 7, 2025, 11:05 AM

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the buttons should be 121 pixles wide. 363/3=121 meaning they should fit perfectly on the screen

haughty shuttle Dec 7, 2025, 11:12 AM

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granite raptor I have button widigets grided to a frame then the frame is packed to the screen....

I don't tkinter's button width is in pixels for whatever reason

granite raptor Dec 7, 2025, 11:12 AM

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its not hence why i have to put an image in the button

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it is*

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i followed this
https://stackoverflow.com/questions/46284901/how-do-i-resize-buttons-in-pixels-tkinter

Stack Overflow

How do I resize buttons in pixels? (Tkinter)

I am making a Tic Tac Toe game in Python Tkinter but the buttons are rectangles, and I want them to all be 100x100 pixels in size. I tried using:

a1 = Button(root, text="", font="Helvetica 16 bold",

haughty shuttle Dec 7, 2025, 11:14 AM

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are you just trying to get them to fill their frame?

granite raptor Dec 7, 2025, 11:14 AM

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i need them to be a spesific leanth in width so they scan fill the screen properly

haughty shuttle Dec 7, 2025, 11:14 AM

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you can just sticky them in the grid

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then they'll be whatever size the frame is

granite raptor Dec 7, 2025, 11:15 AM

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precicly 121 long to fill the 323 width screen

haughty shuttle Dec 7, 2025, 11:15 AM

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I wouldn't rely on fixed values in a UI like that

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you can make them resize with the window and always stretch to 1/3rd

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in theory, if you added a 4th button, you would want it to just as easily fit in

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without having to resize everything

granite raptor Dec 7, 2025, 11:16 AM

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how would i do that?

haughty shuttle Dec 7, 2025, 11:17 AM

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1 sec

granite raptor Dec 7, 2025, 11:17 AM

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thanks

haughty shuttle Dec 7, 2025, 11:19 AM

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import tkinter as tk


root = tk.Tk()
frame = tk.Frame(root)
frame.pack(fill = 'both', expand=True)
for i in range(3):
    tk.Button(frame, text = f'Button {i+1}').grid(row=0, column=i, sticky='ew')
    frame.grid_columnconfigure(i, weight=1)

root.mainloop()

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try running this

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look what happens when the window expands

granite raptor Dec 7, 2025, 11:20 AM

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ill will try this out

granite raptor Dec 7, 2025, 11:25 AM

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haughty shuttle ```py import tkinter as tk root = tk.Tk() frame = tk.Frame(root) frame.pack(fi...

buttonFrame.grid(row=0, column=0, fill = 'both', expand=True)
displayedFrame.grid(row=1, column=0, fill = 'both', expand=True)

bad option "-fill": must be -column, -columnspan, -in, -ipadx, -ipady, -padx, -pady, -row, -rowspan, or -sticky

haughty shuttle Dec 7, 2025, 11:25 AM

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the fill/expand was for my frame pack

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pack and grid don't have the same options

granite raptor Dec 7, 2025, 11:25 AM

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ah

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Is it possible with grid?

haughty shuttle Dec 7, 2025, 11:25 AM

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Can you share your full code?

granite raptor Dec 7, 2025, 11:25 AM

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sure

haughty shuttle Dec 7, 2025, 11:26 AM

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if you're adding your frame with grid, you should just be able to use sticky='ew'

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this tells your widget to anchor itself to east/west (which is the left/right side)

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If I get rid of sticky, this happens. The columns are the same size, but the buttons don't completely fill out their columns

granite raptor Dec 7, 2025, 11:27 AM

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📎 message.txt

visual galeBOT Dec 7, 2025, 11:27 AM

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granite raptor

Click here to see this code in our pastebin.

haughty shuttle Dec 7, 2025, 11:27 AM

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visual gale [Click here](https://paste.pythondiscord.com/54KCWFINRZJ4YASFJUR34SX45E) to see ...

can you react to this so it gets added to the paste bin?

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yup, just doing what I had above works fine

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you need sticky in the buttons, and the buttonFrame needs the grid_columnconfigure

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also this can be simplified

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-command=lambda: checkAnswerFunction())
+command=checkAnswerFunction)

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you don't need a lambda for a command unless it has an argument

granite raptor Dec 7, 2025, 11:34 AM

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I though it will run the command when i run the script if theres no a lmabanda

haughty shuttle Dec 7, 2025, 11:34 AM

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Only if you include the ()

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checkAnswerFunction and checkAnswerFunction() are very different things

granite raptor Dec 7, 2025, 11:35 AM

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Ah i see

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dident relise thats how it worked

haughty shuttle Dec 7, 2025, 11:35 AM

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the command expects a "callable"

granite raptor Dec 7, 2025, 11:35 AM

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ive just aways put the function in there

haughty shuttle Dec 7, 2025, 11:36 AM

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checkAnswerFunction is the function object itself (which is callable)
checkAnswerFunction() is a call to the function, so it's basically trying to use the return value as a command

granite raptor Dec 7, 2025, 11:37 AM

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ok

granite raptor Dec 7, 2025, 11:40 AM

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haughty shuttle `checkAnswerFunction` is the function object itself (which is callable) `checkAn...

im still getting an error after adding grid_columnconfigure and sticky in the buttons

Traceback (most recent call last):
  File "/home/samms/PycharmProjects/FlasCards(ComputerSeince Revision/.venv/Scripts/Main.py", line 123, in <module>
    buttonFrame.grid(row=0, column=0, fill = 'both', expand=True)
  File "/usr/lib/python3.12/tkinter/__init__.py", line 2569, in grid_configure
    self.tk.call(
_tkinter.TclError: bad option "-fill": must be -column, -columnspan, -in, -ipadx, -ipady, -padx, -pady, -row, -rowspan, or -sticky

haughty shuttle Dec 7, 2025, 11:40 AM

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fill and expand cannot be used in grid

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if you're using grid instead of pack, just sticky should be enough

granite raptor Dec 7, 2025, 11:41 AM

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Ill try

haughty shuttle Dec 7, 2025, 11:41 AM

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you might want to use pack for your frames though

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it's usually a good idea for top level frames so they can properly expand in the window

granite raptor Dec 7, 2025, 11:42 AM

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ill uses pack

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its just i may be adding imsages into the questions will pack still work

haughty shuttle Dec 7, 2025, 11:42 AM

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packing the frames doesn't change the contents

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every frame has a "geometry manager"

granite raptor Dec 7, 2025, 11:43 AM

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alright

haughty shuttle Dec 7, 2025, 11:43 AM

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you can use either pack or grid

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but you can't mix and match for the same frame

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so if I pack something into a frame, I can't also grid something into that same frame

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but frames are nested

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so I can pack a frame into the window

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and then grid the elements (buttons, etc) into that frame

granite raptor Dec 7, 2025, 11:45 AM

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ive packed the buttons in insted but only 1 button resized the other two dont

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haughty shuttle Dec 7, 2025, 11:45 AM

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how did you do grid_columnconfigure?

granite raptor Dec 7, 2025, 11:45 AM

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without the for loop bit

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does it need to be done for all of the buttons

haughty shuttle Dec 7, 2025, 11:46 AM

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it's done for the column

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the for loop I had made sure all columns were set to weight 1

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for i in range(3):
    buttonFrame.grid_columnconfigure(i, weight=1)

granite raptor Dec 7, 2025, 11:46 AM

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alright isee

haughty shuttle Dec 7, 2025, 11:46 AM

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you can just do this

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you have 3 columns

granite raptor Dec 7, 2025, 11:49 AM

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yes its working now thanks

haughty shuttle Dec 7, 2025, 11:51 AM

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np!

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layout management is definitely one of the more confusing things to wrap your head around in tkinter

granite raptor Dec 7, 2025, 11:53 AM

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ive tried putting the same thing in the raidio buttons but its not doing anything

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width wise

haughty shuttle Dec 7, 2025, 11:55 AM

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what are you trying to do with them?

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something like this?

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granite raptor Dec 7, 2025, 12:04 PM

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yes that would work

haughty shuttle Dec 7, 2025, 12:05 PM

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I think it would like nicer if you left align the buttons, but then you end up with something like this

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for this, I added lightgray to the radio button frame

granite raptor Dec 7, 2025, 12:08 PM

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but i want the text to strech with the screen

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is that possibler

haughty shuttle Dec 7, 2025, 12:10 PM

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yes, it will just the same as the upper buttons

granite raptor Dec 7, 2025, 12:10 PM

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thats good

haughty shuttle Dec 7, 2025, 12:10 PM

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see if you can apply the same idea that you did for the button buttons to the radio buttons and frame

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granite raptor Dec 7, 2025, 12:12 PM

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Theres 3 buttons so im using the same for loop

for i in range(3):
    buttonFrame.grid_columnconfigure(i, weight=1)
    radioButtonFrame.grid_rowconfigure(i, weight=1)
    radioButtonFrame.grid_columnconfigure(i, weight=1)
buttonFrame.pack(fill = 'both', expand=True)
displayedFrame.pack(fill = 'both', expand=True)

visual galeBOT Dec 7, 2025, 12:12 PM

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Hey @granite raptor!

Please edit your message to use a code block

Add a py after the three backticks.

```py
print('Hello, world!')
```

This will result in the following:

print('Hello, world!')```

haughty shuttle Dec 7, 2025, 12:12 PM

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granite raptor Theres 3 buttons so im using the same for loop ``` for i in range(3): butto...

your radio button frame only has 1 column, it doesn't need to be in the loop

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and rowconfigure is just the vertical space, which you likely don't need to expand as the window gets taller

granite raptor Dec 7, 2025, 12:15 PM

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so just radioButtonFrame.grid_columnconfigure(0, weight=1)

haughty shuttle Dec 7, 2025, 12:15 PM

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yes

granite raptor Dec 7, 2025, 12:16 PM

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and sticky center?

haughty shuttle Dec 7, 2025, 12:16 PM

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it also needs to be packed with expand/fill flags

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buttonFrame.pack(fill='both', expand=True)
displayedFrame.pack(fill='both', expand=True)

haughty shuttle Dec 7, 2025, 12:16 PM

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granite raptor and sticky center?

sticky refers to the edges of the widget. "no sticky" is basically sticky center

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it won't stick to anything

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but also if you're using pack, you don't have to worry about sticky

granite raptor Dec 7, 2025, 12:18 PM

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every thing is working now

visual galeBOT Dec 7, 2025, 1:18 PM

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#🔒 Buttons are not set pixel length tkinter