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/usr/include/poppler/ErrorCodes.h is in libpoppler-private-dev 0.62.0-2ubuntu2.

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//========================================================================
//
// ErrorCodes.h
//
// Copyright 2002-2003 Glyph & Cog, LLC
//
//========================================================================

#ifndef ERRORCODES_H
#define ERRORCODES_H

#define errNone             0	// no error

#define errOpenFile         1	// couldn't open the PDF file

#define errBadCatalog       2	// couldn't read the page catalog

#define errDamaged          3	// PDF file was damaged and couldn't be
				// repaired

#define errEncrypted        4	// file was encrypted and password was
				// incorrect or not supplied

#define errHighlightFile    5	// nonexistent or invalid highlight file

#define errBadPrinter       6   // invalid printer

#define errPrinting         7   // error during printing

#define errPermission       8	// PDF file doesn't allow that operation

#define errBadPageNum       9	// invalid page number

#define errFileIO          10   // file I/O error

#endif