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

DemoPrograms old/Demo_Crossword_Puzzle.py

@@ -0,0 +1,54 @@
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+    # import PySimpleGUIWeb as sg       # take your pick of ports. Runs on both
+else:
+    import PySimpleGUI27 as sg
+import random
+import string
+
+"""
+    Demo application to show how to draw rectangles and letters on a Graph Element
+    This demo mocks up a crossword puzzle board
+    It will place a letter where you click on the puzzle
+"""
+
+
+BOX_SIZE = 25
+
+layout = [
+            [sg.Text('Crossword Puzzle Using PySimpleGUI'), sg.Text('', key='_OUTPUT_')],
+            [sg.Graph((800,800), (0,450), (450,0), key='_GRAPH_', change_submits=True, drag_submits=False)],
+            [sg.Button('Show'), sg.Button('Exit')]
+         ]
+
+window = sg.Window('Window Title', ).Layout(layout).Finalize()
+
+g = window.FindElement('_GRAPH_')
+
+for row in range(16):
+    for col in range(16):
+        if random.randint(0,100) > 10:
+            g.DrawRectangle((col * BOX_SIZE + 5, row * BOX_SIZE + 3), (col * BOX_SIZE + BOX_SIZE + 5, row * BOX_SIZE + BOX_SIZE + 3), line_color='black')
+        else:
+            g.DrawRectangle((col * BOX_SIZE + 5, row * BOX_SIZE + 3), (col * BOX_SIZE + BOX_SIZE + 5, row * BOX_SIZE + BOX_SIZE + 3), line_color='black', fill_color='black')
+
+        g.DrawText('{}'.format(row * 6 + col + 1), (col * BOX_SIZE + 10, row * BOX_SIZE + 8))
+
+while True:             # Event Loop
+    event, values = window.Read()
+    print(event, values)
+    if event is None or event == 'Exit':
+        break
+    mouse = values['_GRAPH_']
+
+    if event == '_GRAPH_':
+        if mouse == (None, None):
+            continue
+        box_x = mouse[0]//BOX_SIZE
+        box_y = mouse[1]//BOX_SIZE
+        letter_location = (box_x * BOX_SIZE + 18, box_y * BOX_SIZE + 17)
+        print(box_x, box_y)
+        g.DrawText('{}'.format(random.choice(string.ascii_uppercase)), letter_location, font='Courier 25')
+
+window.Close()