fixed bug with the caret positioning after SetValue() introduced by the last commit

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12948 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/textctrl.cpp

@@ -433,6 +433,9 @@ void wxTextCtrl::SetValue(const wxString& value)
         Clear();
 
         WriteText(value);
+
+        // for compatibility, don't move the cursor when doing SetValue()
+        SetInsertionPoint(0);
     }
 }