New Demo - Class wrapper

DemoPrograms/Demo_Class_Wrapper.py

@@ -0,0 +1,37 @@
+import PySimpleGUI as sg
+
+"""
+    Demo - Class wrapper
+    
+    Using a class to encapsulate PySimpleGUI Window creation & event loop
+
+    Copyright 2022 PySimpleGUI
+"""
+
+class SampleGUI():
+
+    def __init__(self):
+        self.layout = [ [sg.Text('My layout')],
+                        [sg.Input(key='-IN-')],
+                        [sg.Button('Go'), sg.Button('Exit')] ]
+
+        self.window = sg.Window('My new window', self.layout)
+
+    def run(self):
+        while True:             # Event Loop
+            self.event, self.values = self.window.read()
+            if self.event in (sg.WIN_CLOSED, 'Exit'):
+                break
+
+            if self.event == 'Go':
+                self.button_go()
+
+        self.window.close()
+
+    def button_go(self):
+        sg.popup('Go button clicked', 'Input value:', self.values['-IN-'])
+
+# Create the class
+my_gui = SampleGUI()
+# run the event loop
+my_gui.run()