poppler
#include <poppler.h>
#define POPPLER_ERROR poppler_error_quark ()
Error codes returned by PopplerDocument
POPPLER_ERROR_INVALID
Generic error when a document operation fails
POPPLER_ERROR_ENCRYPTED
Document is encrypted
POPPLER_ERROR_OPEN_FILE
File could not be opened for writing when saving document
POPPLER_ERROR_BAD_CATALOG
Failed to read the document catalog
POPPLER_ERROR_DAMAGED
Document is damaged
POPPLER_ORIENTATION_PORTRAIT
POPPLER_ORIENTATION_LANDSCAPE
POPPLER_ORIENTATION_UPSIDEDOWN
POPPLER_ORIENTATION_SEASCAPE
