Merge pull request #3022 from PySimpleGUI/Dev-latest

New Demo - simulated radio buttons.  Get the same behavior of radio b…

DemoPrograms/Demo_Radio_Buttons_Simulated.py

@@ -0,0 +1,32 @@
+import PySimpleGUI as sg
+
+"""
+    This demo uses buttons to simulate radio buttons.
+    
+    In this demo the variable active_radio_button has the key for the currently active button
+
+    Copyright 2020 PySimpleGUI.org
+"""
+
+radio_keys = ['Play', 'Stop', 'Pause', 'Off']
+selected_color = ('red', 'white')
+active_radio_button = None
+
+layout = [  [sg.Text('My Window')],
+            [sg.Text('These are simulated radio buttons')],
+            [sg.Button(name) for name in radio_keys],
+            [sg.Button('Go'), sg.Button('Exit')]  ]
+
+window = sg.Window('Window Title', layout, use_default_focus=False)
+
+while True:             # Event Loop
+    event, values = window.read()
+    if event in (None, 'Exit'):
+        break
+    if event in radio_keys:
+        for k in radio_keys:
+            window[k].update(button_color=sg.theme_button_color())
+        window[event].update(button_color=selected_color)
+        active_radio_button = event
+
+window.close()