THPDFDocumentHandlerStatus Type
THPDFDocumentHandlerStatus = (
dhsNotRun, dhsSucceeded, dhsNoHandler, dhsInvalidOptions,
dhsInvalidSource, dhsUnsupportedContent, dhsBudgetExceeded,
dhsCancelled, dhsHandlerFailed, dhsDestinationFailed
);예상되는 실패에 예외를 요구하지 않으면서 인식, 검증, 예산, 취소, 핸들러, 대상 결과를 구분합니다