FILEPDFOPTIONS

typedef struct _FILEPDFOPTIONS
{
   L_UINT uStructSize;
   L_BOOL bUseLibFonts;
   L_INT nXResolution;
   L_INT nYResolution;
   L_INT nDisplayDepth;
   L_INT nTextAlpha;
   L_INT nGraphicsAlpha;
   L_UCHAR szPassword[FILEPDFOPTIONS_MAX_PASSWORD_LEN]; // Password to be used with encrypted PDF files
   L_UINT uFlags;
   L_BOOL bCallbackEnabled;
   BITMAPLOADCALLBACK pfnLoadCallback;
   L_VOID* pCallbackUserData;
   L_TCHAR szOutputFullPath[L_MAXPATH];
   L_BOOL bUseImageData;
} FILEPDFOPTIONS, * pFILEPDFOPTIONS;

The FILEPDFOPTIONS structure provides information on loading PDF, PS or EPS files in LEADTOOLS.

The following functions make use of this structure:

LFileSettings::GetPDFOptions

LFileSettings::SetPDFOptions

Member	Description
uStructSize	Size of the structure. This must be set before passing this structure to the LEAD functions.
bUseLibFonts	Flag that indicates whether to use the library installed fonts or system fonts. Possible values are:

	Value	Meaning
	TRUE	Use the library installed fonts.
	FALSE	Use the system fonts.

nXResolution	Horizontal display resolution in dots per inch.
nYResolution	Vertical display resolution in dots per inch.
nDisplayDepth	Resulting bitmap pixel depth. Possible values are:

	Value	Meaning
	1	1 bit per pixel in the resultant bitmap
	4	4 bits per pixel in the resultant bitmap
	8	8 bits per pixel in the resultant bitmap
	24	24 bits per pixel in the resultant bitmap

nTextAlpha

Flag that indicates what type of font anti-aliasing to use. Possible values are:

	Value	Meaning
	1	Do not use font anti-aliasing.
	2	Use 2-bit font anti-aliasing.
	4	Use 4-bit font anti-aliasing.

nGraphicsAlpha

Flag that indicates what type of graphics anti-aliasing to use. Possible values are:

	Value	Meaning
	1	Do not use graphics anti-aliasing.
	2	Use 2-bit graphics anti-aliasing.
	4	Use 4-bit graphics anti-aliasing.
szPassword	String that contains the user password. This Password to be used with encrypted PDF files.
uFlags	Flags for PDF or Postscript files. Possible values are:
	Value	Meaning
	PDF_DISABLE_CROPPING	Used to disable cropping for postscript files.
	PDF_DISABLE_CIECOLORS	Used to disable using CIE colors for both PDF and postscript files.

Comments

pFILEPDFOPTIONS is a pointer to a FILEPDFOPTIONS structure.

Use LFileSettings::SetPDFOptions and LFileSettings::GetPDFOptions to set and get the PDF, PS and EPS file options.

Aliasing is the effect on all pixel devices where diagonal and curved lines have a zigzag appearance. As pixels get larger, this effect becomes more noticeable. Anti-aliasing refers to methods designed to decrease or eliminate this effect. This is done by shading the pixels along the borders of the affected lines.