I am using Python 3.11 on Windows. I don't understand the behaviour of winfo_geometry(), winfo_height(), winfo_x(), etc. Here is my code: import tkinter as tk from tkinter import ttk class Application: def __init__(self, root): self.root = root self.root.title("Window title") self.root.geometry("800x600") self.define_styles() self.place_widgets() self.print_dimensions() def define_styles(self): self.dark = ttk.Style() self.dark.configure('Dark.TFrame', background='#343434') self.light_green = ttk.Style() self.light_green.configure('LightGreen.TFrame', background='#a4edde') self.light_blue = ttk.Style() self.light_blue.configure('LightBlue.TFrame', background='#73d9eb') def place_widgets(self): self.frame_for_canvas = ttk.Frame(self.root, style='Dark.TFrame', width=500) self.frm_right_panel = ttk.Frame(self.root, style='LightGreen.TFrame', width=200) self.btn_1 = ttk.Button(self.frame_for_canvas, text='btn_1', command=self.f_btn1) self.lbl_1 = ttk.Label(self.frame_for_canvas, text="lbl_1", width=40) self.btn_1.pack() self.lbl_1.pack() self.frame_for_canvas.pack_propagate(0) self.frame_for_canvas.pack(side='left', fill='both', expand=True) self.frm_right_panel.pack_propagate(0) self.frm_right_panel.pack(side='left', fill='both', expand=False) self.frm_header1 = ttk.Frame(self.frm_right_panel, style='LightBlue.TFrame') self.btn_2 = ttk.Button(self.frm_header1, text='btn_2', command=self.f_btn2) self.lbl_2 = ttk.Label(self.frm_header1, text="lbl_2", width=40) self.btn_2.pack() self.lbl_2.pack() self.frm_header1.pack(side='top', fill='x', expand=False) self.frm_header2 = ttk.Frame(self.frm_right_panel, style='Dark.TFrame') self.btn_3 = ttk.Button(self.frm_header2, text='btn_3', command=self.f_btn3) self.lbl_3 = ttk.Label(self.frm_header2, text="lbl_3", width=40) self.btn_3.pack() self.lbl_3.pack() self.frm_header2.pack(side='top', fill='x', expand=False) def f_btn1(self): self.lbl_1.config(text=self.frame_for_canvas.winfo_geometry()) self.print_dimensions() def f_btn2(self): self.lbl_2.config(text=self.frm_header1.winfo_geometry()) self.print_dimensions() def f_btn3(self): self.lbl_3.config(text=self.frm_header2.winfo_geometry()) self.print_dimensions() def print_dimensions(self): self.root.update_idletasks() self.frame_for_canvas.update_idletasks() self.frm_right_panel.update_idletasks() self.frm_header1.update_idletasks() self.frm_header2.update_idletasks() print('self.root.winfo_geometry()', self.root.winfo_geometry()) print('self.root.winfo_height()', self.root.winfo_height()) print('self.root.winfo_width()', self.root.winfo_width()) print('self.root.winfo_x()', self.root.winfo_x()) print('self.root.winfo_y()', self.root.winfo_y()) print('self.frame_for_canvas.winfo_geometry()', self.frame_for_canvas.winfo_geometry()) print('self.frame_for_canvas.winfo_height()', self.frame_for_canvas.winfo_height()) print('self.frame_for_canvas.winfo_width()', self.frame_for_canvas.winfo_width()) print('self.frame_for_canvas.winfo_x()', self.frame_for_canvas.winfo_x()) print('self.frame_for_canvas.winfo_y()', self.frame_for_canvas.winfo_y()) print('self.frm_right_panel.winfo_geometry()', self.frm_right_panel.winfo_geometry()) print('self.frm_right_panel.winfo_height()', self.frm_right_panel.winfo_height()) print('self.frm_right_panel.winfo_width()', self.frm_right_panel.winfo_width()) print('self.frm_right_panel.winfo_x()', self.frm_right_panel.winfo_x()) print('self.frm_right_panel.winfo_y()', self.frm_right_panel.winfo_y()) print('self.frm_header1.winfo_geometry()', self.frm_header1.winfo_geometry()) print('self.frm_header1.winfo_height()', self.frm_header1.winfo_height()) print('self.frm_header1.winfo_width()', self.frm_header1.winfo_width()) print('self.frm_header1.winfo_x()', self.frm_header1.winfo_x()) print('self.frm_header1.winfo_y()', self.frm_header1.winfo_y()) print('self.frm_header2.winfo_geometry()', self.frm_header2.winfo_geometry()) print('self.frm_header2.winfo_height()', self.frm_header2.winfo_height()) print('self.frm_header2.winfo_width()', self.frm_header2.winfo_width()) print('self.frm_header2.winfo_x()', self.frm_header2.winfo_x()) print('self.frm_header2.winfo_y()', self.frm_header2.winfo_y()) if __name__ == '__main__': root = tk.Tk() app = Application(root) root.mainloop() The code creates this window: At the same time, it prints this on my console: self.root.winfo_geometry() 800x600+208+208 self.root.winfo_height() 600 self.root.winfo_width() 800 self.root.winfo_x() 208 self.root.winfo_y() 208 self.frame_for_canvas.winfo_geometry() 1x1+0+0 <--- weird self.frame_for_canvas.winfo_height() 1 self.frame_for_canvas.winfo_width() 1 self.frame_for_canvas.winfo_x() 0 self.frame_for_canvas.winfo_y() 0 self.frm_right_panel.winfo_geometry() 1x1+0+0 self.frm_right_panel.winfo_height() 1 self.frm_right_panel.winfo_width() 1 self.frm_right_panel.winfo_x() 0 self.frm_right_panel.winfo_y() 0 self.frm_header1.winfo_geometry() 1x1+0+0 <--- weird self.frm_header1.winfo_height() 1 self.frm_header1.winfo_width() 1 self.frm_header1.winfo_x() 0 self.frm_header1.winfo_y() 0 self.frm_header2.winfo_geometry() 1x1+0+0 <--- weird self.frm_header2.winfo_height() 1 self.frm_header2.winfo_width() 1 self.frm_header2.winfo_x() 0 self.frm_header2.winfo_y() 0 Notice how, except for root, the dimensions are incorrect. However, when I click on any of the 3 buttons, the corresponding labels below them are updated with the correct dimensions of the frames. If I resize the window and click the buttons, they are updated as well. So if I call self.root.winfo_geometry(), self.root.winfo_width(), etc. after packing and displaying the widgets, the returned dimensions/values are not correct. Only after clicking the buttons and calling f_btn1(), f_btn2(), f_btn3() are these values displayed correctly. According to the documentation here, w.winfo_geometry() Returns the geometry string describing the size and on-screen location of w. See Section 5.10, “Geometry strings”. Warning The geometry is not accurate until the application has updated its idle tasks. In particular, all geometries are initially '1x1+0+0' until the widgets and geometry manager have negotiated their sizes and positions. See the .update_idletasks() method, above, in this section to see how to insure that the widget's geometry is up to date. That's why I am calling update_idletasks() inside print_dimensions(), but winfo_geometry() still returns 1x1+0+0. Thanks in advance. Continue reading...
