pPDFCOMP_IMAGECALLBACK Function

pPDFCOMP_IMAGECALLBACK

#include "l_bitmap.h"
#include "lpdfComp.h"

L_INT pEXT_CALLBACK pPDFCOMP_IMAGECALLBACK (hDocument, nPage, pSegmentInfo, pUserData)

LCPDF_HANDLE hDocument;	/* handle to an existing PDF document */
L_INT nPage;	/* current page index */
LPSEGMENTINFO pSegmentInfo;	/* pointer to the SEGMENTINFO structure */
L_VOID * pUserData;	/* pointer to user data */

This callback function is called every time a segment is added to the PDF document.

Parameter	Description
hDocument	Handle to an existing PDF document. This handle is obtained by calling the L_PdfCompInit function.
nPage	Index of the page on which the segment is being written. This is a zero-based index.
pSegmentInfo	Pointer to the SEGMENTINFO structure that contains the segment information.
pUserData	Void pointer that you can use to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the function that uses this callback function. This is the same pointer that you pass in the pUserData parameter of the L_PdfCompInit function.
	Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your callback function.

Returns

SUCCESS	To add the current segment and continue.
FAILURE	Do not add this segment. Continue to the next segment.

Comments

This call back is called each time an MRC segment is added to the PDF file in memory, by calling L_PdfCompInsertMRC.

The user should return SUCCESS to add the current segment and continue with the process, or FAILURE, to not add this segment and proceed with the next one.

Required DLLs and Libraries

LCPMRC
LCPPDF
LCPENC
LCZIB

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

Functions:	L_PdfCompInit, L_PdfCompInsertMRC
Topics:	Creating a Compressed PDF File
	PDF Compressor Functions: Creating a File