New Popup demo

Demo_Popup_Custom.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+
+'''
+   Use this code as a starting point for creating your own Popup functions.  
+   Rather than creating a long list of Popup high-level API calls, PySimpleGUI provides
+   you with the tools to easily create your own.  If you need more than what the standard PopupGetText and
+   other calls provide, then it's time for you to graduate into making your own windows.  Or, maybe you need
+   another window that pops-up over your primary window.  Whatever the need, don't hesitate to dive in
+   and create your own Popup call.
+   
+   This example is for a DropDown / Combobox Popup.  You provide it with a title, a message and the list
+   of values to choose from. It mimics the return values of existing Popup calls (None if nothing was input)
+'''
+
+
+def PopupDropDown(title, text, values):
+    window = sg.Window(title).Layout([[sg.Text(text)],
+                                      [sg.DropDown(values, key='_drop')],
+                                      [sg.OK(), sg.Cancel()]])
+    button, values = window.Read()
+    return None if button != 'OK' else values['_drop']
+
+
+# -----------------------  Calling your PopupDropDown function -----------------------
+
+values = ['choice {}'.format(x) for x in range(30)]
+
+print(PopupDropDown('My Title', 'Please make a selection', values))