Moved all demo programs into subfolder

DemoPrograms/Demo_Desktop_Widget_Timer.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+import time
+
+"""
+ Timer Desktop Widget Creates a floating timer that is always on top of other windows You move it by grabbing anywhere on the window Good example of how to do a non-blocking, polling program using SimpleGUI Can be used to poll hardware when running on a Pi
+ 
+ While the timer ticks are being generated by PySimpleGUI's "timeout" mechanism, the actual value
+  of the timer that is displayed comes from the system timer, time.time().  This guarantees an
+  accurate time value is displayed regardless of the accuracy of the PySimpleGUI timer tick. If
+  this design were not used, then the time value displayed would slowly drift by the amount of time
+  it takes to execute the PySimpleGUI read and update calls (not good!)     
+ 
+ NOTE - you will get a warning message printed when you exit using exit button.
+ It will look something like: invalid command name \"1616802625480StopMove\"
+"""
+
+
+# ----------------  Create Form  ----------------
+sg.ChangeLookAndFeel('Black')
+sg.SetOptions(element_padding=(0, 0))
+
+layout = [[sg.Text('')],
+         [sg.Text('', size=(8, 2), font=('Helvetica', 20), justification='center', key='text')],
+         [sg.Button('Pause', key='button', button_color=('white', '#001480')),
+          sg.Button('Reset', button_color=('white', '#007339'), key='Reset'),
+          sg.Exit(button_color=('white', 'firebrick4'), key='Exit')]]
+
+window = sg.Window('Running Timer', no_titlebar=True, auto_size_buttons=False, keep_on_top=True, grab_anywhere=True).Layout(layout)
+
+# ----------------  main loop  ----------------
+current_time = 0
+paused = False
+start_time = int(round(time.time() * 100))
+while (True):
+    # --------- Read and update window --------
+    if not paused:
+        event, values = window.Read(timeout=10)
+        current_time = int(round(time.time() * 100)) - start_time
+    else:
+        event, values = window.Read()
+    if event == 'button':
+        event = window.FindElement(event).GetText()
+    # --------- Do Button Operations --------
+    if event is None or event == 'Exit':        # ALWAYS give a way out of program
+        break
+    if event is 'Reset':
+        start_time = int(round(time.time() * 100))
+        current_time = 0
+        paused_time = start_time
+    elif event == 'Pause':
+        paused = True
+        paused_time = int(round(time.time() * 100))
+        element = window.FindElement('button')
+        element.Update(text='Run')
+    elif event == 'Run':
+        paused = False
+        start_time = start_time + int(round(time.time() * 100)) - paused_time
+        element = window.FindElement('button')
+        element.Update(text='Pause')
+
+    # --------- Display timer in window --------
+    window.FindElement('text').Update('{:02d}:{:02d}.{:02d}'.format((current_time // 100) // 60,
+                                                                  (current_time // 100) % 60,
+                                                                  current_time % 100))
+
+# --------- After loop --------