Here is how to build a GUI with FreeSimpleGUI in Python.

pip install FreeSimpleGUI

import FreeSimpleGUI as sg
# Define the layout
layout = [[sg.Text("Hello, World!"), sg.Button("Click Me")]]
# Create the window
window = sg.Window("My First GUI", layout)
# Event Loop
while True:
  event, values = window.read()
  if event == sg.WIN_CLOSED:
    break
  elif event == "Click Me":
    print("Button clicked!")
window.close()

python my_window.py

import FreeSimpleGUI as sg
layout = [
  [sg.Text("Enter your name:")],
  [sg.InputText(key="name")],
  [sg.Button("Greet Me")]
]
window = sg.Window("Greeting App", layout)
while True:
  event, values = window.read()
  if event == sg.WIN_CLOSED:
    break
  elif event == "Greet Me":
    name = values["name"]
    print(f"Hello, {name}!")
window.close()

---

1. We import FreeSimpleGUI as sg for convenience.
2. The layout list defines the window's content. In this case, it has a row with a text element and a button.
3. The sg.Window function creates the window with the specified title ("My First GUI") and the layout.
4. The while True loop keeps the window open until the user closes it.
5. window.read() pauses the program and waits for user interaction (closing the window or clicking the button). It returns a tuple containing the event name (e.g., button click, window closed) and the current values of all input elements (empty in this case).
6. The if statements check for the event type:
   • sg.WIN_CLOSED: The user closed the window, so we break out of the loop.
   • "Click Me": The button was clicked, and we print a message to the console.
7. Finally, window.close() closes the window after the loop exits.

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