import tkinter as tk from tkinter import ttk from Logic.Filehandler import vytvor_zip def run_app(): root = tk.Tk() root.title("Three Tab GUI") root.geometry("1280x720") notebook = ttk.Notebook(root) notebook.pack(expand=True, fill='both') tab1 = ttk.Frame(notebook) tab2 = ttk.Frame(notebook) tab3 = ttk.Frame(notebook) notebook.add(tab1, text="Tab 1") notebook.add(tab2, text="Tab 2") notebook.add(tab3, text="Tab 3") label1 = ttk.Label(tab1, text="Welcome to Tab 1") columns = ("Name", "Age", "Occupation") tree = ttk.Treeview(tab1, columns=columns, show='headings') # Define column headers for col in columns: tree.heading(col, text=col) tree.column(col, anchor='center', width=150) label1.pack(pady=20) tree.pack(pady=20) label2 = ttk.Label(tab2, text="This is Tab 2") label2.pack(pady=20) label3 = ttk.Label(tab3, text="You are in Tab 3") label3.pack(pady=20) root.mainloop() if __name__ == "__main__": run_app()