Updated Timer Demos and added 4-line OpenCV demo

DemoPrograms/Demo_Timer.py

@@ -7,37 +7,38 @@ def Timer():
     sg.ChangeLookAndFeel('Dark')
     sg.SetOptions(element_padding=(0,0))
     # Make a form, but don't use context manager
-    form = sg.FlexForm('Running Timer', no_titlebar=True, auto_size_buttons=False)
+    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.ReadFormButton('Pause'), sg.ReadFormButton('Reset'), sg.Exit(button_color=('white','firebrick4'))]]
+                 [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!
-    form.Layout(form_rows)
+    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 = form.ReadNonBlocking()
-        form.FindElement('text').Update('{:02d}:{:02d}.{:02d}'.format((i // 100) // 60, (i // 100) % 60, i % 100))
+        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 == 'Pause':
+        elif button == '-RUN-PAUSE-':
             paused = not paused
+            window['-RUN-PAUSE-'].Update('Run' if paused else 'Pause')
 
         if not paused:
             i += 1
-        # Your code begins here
-        time.sleep(.01)
+
 
     # Broke out of main loop. Close the window.
-    form.CloseNonBlockingForm()
+    window.close()
 
 Timer()