NEW Tree Element!

Demo_Tree_Element.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+
+treedata = sg.TreeData()
+
+treedata.Insert("", '_A_', 'A', [1,2,3])
+treedata.Insert("", '_B_', 'B', [4,5,6])
+treedata.Insert("_A_", '_A1_', 'A1', ['can','be','anything'])
+treedata.Insert("", '_C_', 'C', [])
+treedata.Insert("_C_", '_C1_', 'C1', ['or'])
+treedata.Insert("_A_", '_A2_', 'A2', [None, None])
+treedata.Insert("_A1_", '_A3_', 'A30', ['getting deep'])
+treedata.Insert("_C_", '_C2_', 'C2', ['nothing', 'at', 'all'])
+
+layout = [[ sg.Text('Tree Test') ],
+          [ sg.Tree(data=treedata, headings=['col1', 'col2', 'col3'], auto_size_columns=True, num_rows=10, col0_width=10)],
+          [ sg.RButton('Read')]]
+
+window = sg.Window('Tree Element Test').Layout(layout)
+
+while True:     # Event Loop
+    button, value = window.Read()
+    if button is None:
+        break
+    print(button, value)