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];
   L_UINT32 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:

L_GetPDFOptions

L_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

Deprecated - No longer supported. Use RASTERIZEDOCOPTIONS instead.      

Horizontal display resolution in dots per inch. You can use it 0 to use the current screen horizontal resolution.

nYResolution

Deprecated - No longer supported. Use RASTERIZEDOCOPTIONS instead.      

Vertical display resolution in dots per inch. You can use it 0 to use the current screen vertical resolution.

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.

bCallbackEnabled

 

 

Value

Meaning

 

TRUE

 

 

FALSE

 

Comments

pFILEPDFOPTIONS is a pointer to a FILEPDFOPTIONS structure.

Use L_SetPDFOptions and L_GetPDFOptions to set and get the PDF, PS and EPS file options.
 

PDF, PS and EPS files have no physical width or height in pixels. You can use RASTERIZEDOCOPTIONS to control how the final document is rendered as a raster image. For more information, refer to RASTERIZEDOCOPTIONS.   

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.