Tkinter网格不能放置在屏幕的任何中心

Question

So I just need a photo for a background, and then a button in a certain spot. I have the background image loading, but now when I try and place the button it will only go straight into the center of the screen. If I make the column or row anything other than 0, the button goes off the screen.

The full variable is just for if the user wants fullscreen or not, I don't want it to resize to any specific size, just full screen or half. But that's irrelevant.

from Tkinter import *
from PIL import Image, ImageTk

full= False
pilImage= Image.open("test.png")
width, height = pilImage.size
new_size = width/2, height/2
resized_image = pilImage.resize(new_size, Image.ANTIALIAS)



root = Tk()
root.resizable(False, False)



if full:
    root.geometry("1920x1080")
    canvas= Canvas(root, width=1920, height=1080)
    background= ImageTk.PhotoImage(pilImage)
    root.attributes("-fullscreen", True)
    change_window_size_button= Button(root, text="Switch to windowed.", command=root.quit)

else:
    root.geometry("960x540")
    canvas= Canvas(root, width=960, height=540)
    background= ImageTk.PhotoImage(resized_image)
    change_window_size_button= Button(root, text="Switch to fullscreen.", command=root.quit)

canvas.grid(row=0)
label= Label(canvas, image=background)
label.grid(row=0)

change_window_size_button.grid(row=0, column=0)


root.mainloop()

![What it looks like]: https://ibb.co/cycTFT

EDIT: Ok so I found out something new, the problem is that the canvas with the background image is made the default size for the cells. So if i make it go past row and column 0, it goes off the screen into another cell. Here's where the button goes if i make it row=0 and column=1.

![row=0 and column=1]: https://ibb.co/jWt2aT

So I need to make the cells small while maintaining the size of the image, meaning I need to somehow make that take up multiple cells. I still don't know how to do that... But progress none the less.

Answer 1

I'm not sure if this is what you wanted specifically, but I was able to keep the button within the Tkinter window by adding

root.grid_columnconfigure(0, weight=1)
root.grid_rowconfigure(0, weight=1)

and then changing the grid location of the button like

change_window_size_button.grid(row=1, column=0)

this establishes a basis for which to place Widgets inside the "master grid" (root), if you will.

setting row=0 places the button back into the center.

if you mess with this a little bit, you should be able to get the button where you want it.

tkinter button below image.

edit: explanation