L_AnnLoadMultiOffset

#include "l_bitmap.h"

L_LTANN_API L_INT L_AnnLoadMultiOffset(fd, nOffset, nLength, phObjects, nCount, pnItemsRead, pLoadOptions)

L_HFILE fd;	/* windows file handle of the file to load */
L_SSIZE_T nOffset;	/* position of the first byte to load */
L_SIZE_T nLength;	/* number of bytes to read */
pHANNOBJECT phObjects;	/* address of the variable to be updated */
L_INT nCount;	/* size of the phObjects array[A2] */
L_INT *pnItemsRead;	/* pointer to an L_INT that receives the count of the annotation containers successfully read */
pLOADFILEOPTION pLoadOptions;	/* pointer to optional extended load options */

Loads annotations from a position within a file. This enables you to load an annotation file that is embedded in another file.

Parameter	Description
fd	The Windows file handle of the file to load.
nOffset	The position, from the beginning of the file, of the first byte to load. (The byte count starts at zero.)
nLength	The number of bytes of annotation data to read from the file. If you saved the offset using L_AnnSaveMultiOffset, the variable pointed to by puSizeWritten in that function contains the length of data saved. If you do not know the length of the data, pass 0xFFFFFFFF for this parameter.
phObjects	Pointer to an array that will receive the annotation container objects.
nCount	Size of the phObjects array.
pnItemsRead	Pointer to an L_INT that will receive the count of annotation containers successfully read.
pLoadOptions	Pointer to optional extended load options. Pass NULL because this parameter is currently ignored.

Returns

SUCCESS	The function was successful.
< 1	An error occurred. Refer to Return Codes.

Comments

To use this function:

Call the L_AnnLoadMultiOffset function and pass NULL for phObjects, and 0 for nCount.
The required size of the array phObjects array is returned in the L_INT pointed to by pnItemsRead.
Allocate an array of HANNOBJECT that can hold *pnItemsRead.
Call the L_AnnLoadMultiOffset function a second time, and pass the allocated array for phObjects.

This function loads all pages of a multi-page annotation file starting at a given offset, into an array. Each consecutive page of the multi-page annotation file corresponds to one annotation container, and is loaded into consecutive slots of the array. If the annotation file contains many pages, then this method will load the multi-page annotation file much faster than repeated calls to L_AnnLoad. Note that this function only loads annotation files that use the ANNFMT_XML format.

Required DLLs and Libraries

LTANN

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

Platforms

Win32, x64.

Functions:	L_AnnDeletePage, L_AnnDeletePageMemory, L_AnnDeletePageOffset, L_AnnFileInfo, L_AnnFileInfoMemory, L_AnnFileInfoOffset, L_AnnLoad, L_AnnLoadMemory, L_AnnSave, L_AnnSaveMemory, L_AnnSaveOffset, L_AnnSetOptions, L_AnnGetOptions
Topics:	Annotation Files
	Annotation Functions: Input and Output
	Implementing Annotations
	Implementing an Automated Annotation Program
	Implementing a Non-automated Annotation Program
	Annotation Features
	Annotation Functions: Loading Annotation Files