Resize buttons of a Spinbox
I don't know way to access Spinbox buttons, but you can use Control widget from tkinter.tix:
import tkinter.tix as tixroot = tix.Tk()c = tix.Control(root)c.pack()decr = c.subwidget('decr')incr = c.subwidget('incr')decr['height'] = incr['height'] = 100decr['width'] = incr['width'] = 100root.mainloop()