//bool OnHeaderSave(wxExprDatabase& database, wxExpr& expr);
//bool OnShapeLoad(wxExprDatabase& database, wxPyShape& shape, wxExpr& expr);
//bool OnShapeSave(wxExprDatabase& database, wxPyShape& shape, wxExpr& expr);
//bool OnHeaderSave(wxExprDatabase& database, wxExpr& expr);
//bool OnShapeLoad(wxExprDatabase& database, wxPyShape& shape, wxExpr& expr);
//bool OnShapeSave(wxExprDatabase& database, wxPyShape& shape, wxExpr& expr);