#include "ltwrappr.h"

virtual L_INT LAnnRTF::GetTextRTF(uFormat, pText, puLen)

L_UINT uFormat;

text format type

L_TCHAR * pText;

address of character string to be updated

L_SIZE_T * puLen;

address of a variable to be updated

Gets the text and text length (unformatted text or rich text) of an ANNOBJECT_RTF annotation object.

Parameter Description
uFormat Value that specifies the text format type. Possible values are:
  Value Meaning
  RTFFORMAT_TEXT [0x0001] Retrieve the text as unformatted text.
  RTFFORMAT_RTF [0x0002] Retrieve the text as rich text.
pText Pointer to a character string to be updated with the annotation object's character string. This value can be NULL.
puLen Address of the variable to be updated with the length of the object's character string.



There is a fixed annotation object in the client area.


There are no fixed annotation objects in the client are


This function is used to retrieve the text from an ANNOBJECT_RTF object. The text can be retrieved either as rich text, or unformatted text.

Call this function twice. On the first call, pass NULL for the pText argument to get length of the required input buffer. Then, allocate a buffer and call the function a second time to retreive the text. The following code snippet illustrates the process:

   LAnnRTF lRTF;  // assume this is a valid ANNOBJECT_RTF object   
   L_UINT uLength;    
   L_TCHAR *pText;    
   // Get the length   
   lRTF .GetTextRTF(RTFFORMAT_RTF, NULL, &uLength);    
   // Allocate a buffer   
   pText = (L_TCHAR *)malloc((uLength+1) * sizeof(L_TCHAR));    
   // Retrieve the text   
      lRTF .GetTextRTF(RTFFORMAT_RTF, pText, &uLength); 

To get or set the text of other text objects, see the documentation for LAnnRTF::GetTextLen, LAnnRTF::GetText, and LAnnRTF::SetText.

Required DLLs and Libraries


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


Win32, x64.

See Also


Class Members


Annotation Functions: Object Properties


Implementing Annotations


Automated User Interface for Annotations


Annotation Functions: Creating and Deleting Annotations


Types of Annotations


Annotation Functions: Implementing Custom Annotations


Annotation Functions: Creating Custom Annotations


Fixed Annotations


Minimizing Flicker With Double Buffering


Annotation Functions: Working with the Toolbar


// This sample gets the text from Rich Text annotation object in one of two formats (text, or rich text) 
// plRTF: the Rich Text annotation object 
// uFormat: the format of the retrieved text--one of 
L_INT LAnnRTF_GetTextRTFExample(LAnnRTF *plRTF, L_UINT uFormat) 
   L_INT nRet; 
   L_SIZE_T uLength; 
   L_TCHAR *pText; 
   L_TCHAR szMsg[200]; 
   L_TCHAR *pszFormat; 
      case RTFFORMAT_TEXT: 
      pszFormat = TEXT("RTFFORMAT_TEXT"); 
      case RTFFORMAT_RTF: 
      pszFormat = TEXT("RTFFORMAT_RTF"); 
      return FAILURE; 
   // Get the length 
   nRet = plRTF->GetTextRTF( uFormat, NULL, &uLength); 
   if (nRet != SUCCESS) 
      return nRet; 
   pText = (L_TCHAR *)malloc((uLength+1) * sizeof(L_TCHAR)); 
   nRet = plRTF->GetTextRTF( uFormat, pText, &uLength); 
   if (nRet == SUCCESS) 
      wsprintf(szMsg, TEXT("Format: %s\nLength: %d"), pszFormat, uLength); 
      MessageBox(NULL, pText, szMsg, MB_OK); 
      return nRet; 
   return SUCCESS; 

Help Version 19.0.2017.10.27
Products | Support | Contact Us | Copyright Notices
© 1991-2017 LEAD Technologies, Inc. All Rights Reserved.
LEADTOOLS Raster Imaging C++ Class Library Help