Fixed erroneous popup, New demo - simple cpu meter

Demo_Desktop_Widget_CPU_Utilization_Simple.py

@@ -0,0 +1,34 @@
+import PySimpleGUI as sg
+import psutil
+
+# ----------------  Create Form  ----------------
+sg.ChangeLookAndFeel('Black')
+form_rows = [[sg.Text('')],
+             [sg.Text('', size=(8, 2), font=('Helvetica', 20), justification='center', key='text')],
+             [sg.Exit(button_color=('white', 'firebrick4'), pad=((15, 0), 0)),
+              sg.Spin([x + 1 for x in range(10)], 1, key='spin')]]
+# Layout the rows of the form and perform a read. Indicate the form is non-blocking!
+form = sg.FlexForm('CPU Meter', no_titlebar=True, auto_size_buttons=False, keep_on_top=True, grab_anywhere=True)
+form.Layout(form_rows)
+
+# ----------------  main loop  ----------------
+while (True):
+    # --------- Read and update window --------
+    button, values = form.ReadNonBlocking()
+
+    # --------- Do Button Operations --------
+    if values is None or button == 'Exit':
+        break
+    try:
+        interval = int(values['spin'])
+    except:
+        interval = 1
+
+    cpu_percent = psutil.cpu_percent(interval=interval)
+
+    # --------- Display timer in window --------
+
+    form.FindElement('text').Update(f'CPU {cpu_percent:02.0f}%')
+
+# Broke out of main loop. Close the window.
+form.CloseNonBlockingForm()