Fix for OptionMenu not Updating correctly to new values

MikeTheWatchGuy · MikeTheWatchGuy · commit 680e4ca1ca09 · 2019-03-24T11:11:03.000-04:00
diff --git a/PySimpleGUI.py b/PySimpleGUI.py
@@ -718,7 +718,7 @@ def __init__(self, values, default_value=None, size=(None, None), disabled=False
         '''
         self.Values = values
         self.DefaultValue = default_value
-        self.TKOptionMenu = None
+        self.TKOptionMenu = None            # type: tk.OptionMenu
         self.Disabled = disabled
         bg = background_color if background_color else DEFAULT_INPUT_ELEMENTS_COLOR
         fg = text_color if text_color is not None else DEFAULT_INPUT_TEXT_COLOR
@@ -729,6 +729,13 @@ def __init__(self, values, default_value=None, size=(None, None), disabled=False
     def Update(self, value=None, values=None, disabled=None, visible=None):
         if values is not None:
             self.Values = values
+            self.TKOptionMenu['menu'].delete(0, 'end')
+
+            # Insert list of new options (tk._setit hooks them up to var)
+            self.TKStringVar.set(self.Values[0])
+            for new_value in self.Values:
+                self.TKOptionMenu['menu'].add_command(label=new_value, command=tk._setit(self.TKStringVar, new_value))
+
         if self.Values is not None:
             for index, v in enumerate(self.Values):
                 if v == value:
