is returned by the error handler, processing of the wxExpr operation stops.
Another way of handling errors is simply to call \helpref{wxExprDatabase::GetErrorCount}{wxexprdatabasegeterrorcount} after
the operation, to check whether errors have occurred, instead of installing an error handler.
If the error count is more than zero, \helpref{wxExprDatabase::Write}{wxexprdatabasewrite} and
is returned by the error handler, processing of the wxExpr operation stops.
Another way of handling errors is simply to call \helpref{wxExprDatabase::GetErrorCount}{wxexprdatabasegeterrorcount} after
the operation, to check whether errors have occurred, instead of installing an error handler.
If the error count is more than zero, \helpref{wxExprDatabase::Write}{wxexprdatabasewrite} and