LAnnContainer::LoadMemory

#include "ltwrappr.h"

virtual L_INT LAnnContainer::LoadMemory(pMem, uMemSize)

L_UCHAR * pMem;	pointer to the file in memory to be loaded
L_UINT32 uMemSize;	size of the file in memory

Loads an annotation from a file that is stored in memory.

Parameter	Description
pMem	Pointer to the file in memory to be loaded.
uMemSize	Size of the file in memory (in bytes).

Returns

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

Comments

If this function returns SUCCESS and phObject is updated with NULL, there are no annotation objects to load.

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.

Example

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT LAnnContainer_LoadMemoryExample(LAnnContainer  * pLeadAContainer) 
{ 
   L_INT nRet; 
   LAnnContainer TmpContainer ;// Temporary container for the annotations 
   HGLOBAL hFileInMemory = NULL;// Memory handle 
   L_SIZE_T uMemSize; // Size of the data in memory 
   L_UCHAR  *pData; // Pointer to the data in memory 
   // Load the initial annotations 
   nRet = TmpContainer.Load( MAKE_IMAGE_PATH(TEXT("TEST.ANN"))); 
   if(nRet != SUCCESS) 
      return nRet; 
   // Save the annotations as a file in memory 
   nRet = TmpContainer.SaveMemory( ANNFMT_XML, FALSE, &hFileInMemory, &uMemSize); 
   if(nRet != SUCCESS) 
      return nRet; 
   // Destroy the temporary container 
   nRet = TmpContainer.Destroy( ANNFLAG_RECURSE); 
   if(nRet != SUCCESS) 
      return nRet; 
   // Get the pointer to the memory-resident file 
   pData = (L_UCHAR  *) GlobalLock (hFileInMemory); 
   // Load the new file from memory 
   nRet = pLeadAContainer->LoadMemory((L_UCHAR *)pData, (L_UINT32)uMemSize); 
   if(nRet != SUCCESS) 
      return nRet; 
   /* Clean up */ 
   GlobalUnlock (hFileInMemory); 
   GlobalFree (hFileInMemory); 
   return SUCCESS; 
}

Help Version 19.0.2017.10.27

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LEADTOOLS Raster Imaging C++ Class Library Help

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Summary of Features

Functions:	LAnnContainer::DeletePage, LAnnContainer::DeletePageMemory, LAnnContainer::DeletePageOffset, LAnnContainer::FileInfo, LAnnContainer::FileInfoMemory, LAnnContainer::FileInfoOffset, Class Members, LAnnotation::GetOptions, LAnnotation::SetOptions
Topics:	Annotation Functions: Input and Output
	Implementing Annotations
	Key Annotation Features