Major update of all demo programs to use new PEP8 bindings, etc

DemoPrograms old/Demo_Timer.py

@@ -0,0 +1,44 @@
+import PySimpleGUI as sg
+import time
+
+# form that doen't block
+# good for applications with an loop that polls hardware
+def Timer():
+    sg.ChangeLookAndFeel('Dark')
+    sg.SetOptions(element_padding=(0,0))
+    # Make a form, but don't use context manager
+    window = sg.Window('Running Timer', no_titlebar=True, auto_size_buttons=False)
+    # Create a text element that will be updated with status information on the GUI itself
+    # Create the rows
+    form_rows = [[sg.Text('')],
+                 [sg.Text('', size=(8, 2), font=('Helvetica', 20), justification='center', key='text')],
+                 [sg.Button('Pause', key='-RUN-PAUSE-'), sg.Button('Reset'), sg.Exit(button_color=('white','firebrick4'))]]
+    # Layout the rows of the form and perform a read. Indicate the form is non-blocking!
+    window.Layout(form_rows)
+    #
+    # your program's main loop
+    i = 0
+    paused = False
+    start_time = int(round(time.time() * 100))
+    while (True):
+        # This is the code that reads and updates your window
+        button, values = window.read(timeout=0)
+        window.FindElement('text').Update('{:02d}:{:02d}.{:02d}'.format((i // 100) // 60, (i // 100) % 60, i % 100))
+
+        if values is None or button == 'Exit':
+            break
+
+        if button == 'Reset':
+            i=0
+        elif button == '-RUN-PAUSE-':
+            paused = not paused
+            window['-RUN-PAUSE-'].Update('Run' if paused else 'Pause')
+
+        if not paused:
+            i += 1
+
+
+    # Broke out of main loop. Close the window.
+    window.close()
+
+Timer()