+    def OnHelpFind(self, event):
+        self.nb.SetSelection(1)
+        self.finddlg = wxFindReplaceDialog(self, self.finddata, "Find",
+                        wxFR_NOUPDOWN |
+                        wxFR_NOMATCHCASE |
+                        wxFR_NOWHOLEWORD)
+        self.finddlg.Show(True)
+
+    def OnFind(self, event):
+        self.nb.SetSelection(1)
+        end = self.txt.GetLastPosition()
+        textstring = self.txt.GetRange(0, end).lower()
+        start = self.txt.GetSelection()[1]
+        findstring = self.finddata.GetFindString().lower()
+        loc = textstring.find(findstring, start)
+        if loc == -1 and start != 0:
+            # string not found, start at beginning
+            start = 0
+            loc = textstring.find(findstring, start)
+        if loc == -1:
+            dlg = wxMessageDialog(self, 'Find String Not Found',
+                          'Find String Not Found in Demo File',
+                          wxOK | wxICON_INFORMATION)
+            dlg.ShowModal()
+            dlg.Destroy()
+        if self.finddlg:
+            if loc == -1:
+                self.finddlg.SetFocus()
+                return
+            else:
+                self.finddlg.Destroy()
+        self.txt.SetSelection(loc, loc + len(findstring))
+        self.txt.ShowPosition(loc)
+
+
+
+    def OnFindNext(self, event):
+        if self.finddata.GetFindString():
+            self.OnFind(event)
+        else:
+            self.OnHelpFind(event)
+
+    def OnFindClose(self, event):
+        event.GetDialog().Destroy()
+