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python-3.xtkintercanvas

Get height/width of tkinter Canvas

I am searching for this for ages now. Is it so hard to get the height/width of a Canvas in tkinter? I want to do something like this:

c = Tk.Canvas(self, heigth=12, width=12)
c.create_oval(0, 0, self.height, self.width)

So that I draw a circle with the circumference of the width/height of my canvas.

How come I can't find any attribute like width/height of that canvas? c.winfo_width and c.winfo_height wouldn't work, because that only gives me error.

Can you help me? This is really irritating, since even in the constructor there is the attribute heightand width...

Solution

  • Use winfo_reqwidth and winfo_reqheight:

    root = tk.Tk()
c = tk.Canvas(root, height=120, width=120)
c.create_oval(0, 0, c.winfo_reqheight(), c.winfo_reqwidth())

c.pack()
root.mainloop()