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

DemoPrograms old/Demo_Bar_Chart.py

@@ -0,0 +1,29 @@
+import PySimpleGUI as sg
+import random
+
+BAR_WIDTH = 50
+BAR_SPACING = 75
+EDGE_OFFSET = 3
+GRAPH_SIZE = (500,500)
+DATA_SIZE = (500,500)
+
+graph = sg.Graph(GRAPH_SIZE, (0,0), DATA_SIZE)
+
+layout = [[sg.Text('Bar graphs using PySimpleGUI')],
+          [graph],
+          [sg.Button('OK')]]
+
+window = sg.Window('Window Title', layout)
+
+while True:
+    event, values = window.Read()
+    graph.Erase()
+    if event is None:
+        break
+
+    for i in range(7):
+        graph_value = random.randint(0, 400)
+        graph.DrawRectangle(top_left=(i * BAR_SPACING + EDGE_OFFSET, graph_value),
+                            bottom_right=(i * BAR_SPACING + EDGE_OFFSET + BAR_WIDTH, 0), fill_color='blue')
+        graph.DrawText(text=graph_value, location=(i*BAR_SPACING+EDGE_OFFSET+25, graph_value+10))
+window.Close()