use KNOWN_TYPES in on change comparison

mathentry.py

@@ -42,7 +42,7 @@ class MathEntry(wx.TextCtrl):
     def SetValue(self, val):
         self.value_type = type(val)
         val = str(val)
-        super().SetValue(val)
+        super().ChangeValue(val) #TODO
 
 
     def on_enter(self, event):
@@ -94,7 +94,7 @@ class MathEntry(wx.TextCtrl):
 
 
     def clear(self):
-        super().SetValue("")
+        super().ChangeValue("") #TODO
 
 
 

scam.py

@@ -301,6 +301,11 @@ class MainPanel(wx.Panel):
     def on_change(self, event):
         old_cfg = self.orig_cfg
         new_cfg = self.make_cfg()
+
+        for k, v in KNOWN_TYPES.items():
+            if new_cfg.get(k) is None:
+                new_cfg[k] = v
+
         color = wx.Colour(164, 36, 23) if new_cfg != old_cfg else wx.NullColour
         self.btn_save.SetBackgroundColour(color)