LAnnotationWindow::AnnLoadMemory

#include "ltwrappr.h"

virtual L_INT LAnnotationWindow::AnnLoadMemory(phGlobalAnn, uMemSize)

L_UCHAR * phGlobalAnn;	pointer to the file in memory to be loaded
L_UINT32 uMemSize;	file size, in bytes

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

Parameter	Description
phGlobalAnn	Pointer to the file in memory to be loaded.
uMemSize	The size, in bytes, of the file referenced by phGlobalAnn.

Returns

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

Required DLLs and Libraries

LTANN
LTDIS
LTDLG
LTEFX
LTFIL
LTIMG
LTSCR
LTTWN

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

L_INT LAnnotationWindow_AnnLoadMemoryExample(LAnnContainer  * pLeadAContainer, LAnnotationWindow * pLeadAnnWnd) 
{ 
   UNREFERENCED_PARAMETER(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( TEXT("%UserProfile%\\My Documents\\LEADTOOLS Images\\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 = pLeadAnnWnd->AnnLoadMemory((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:	Class Members
Topics:	Annotation Functions: Implementing Automation
	Implementing Annotations
	Automated User Interface for Annotations