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LAnnRTF::GetTextRTF

#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.

Returns

TRUE	There is a fixed annotation object in the client area.
FALSE	There are no fixed annotation objects in the client are

Comments

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

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

// 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 // RTFFORMAT_TEXT // RTFFORMAT_RTF

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;  
    
   switch(uFormat)  
   { 
   case RTFFORMAT_TEXT:  
      pszFormat = TEXT("RTFFORMAT_TEXT"); 
      break;  
       
   case RTFFORMAT_RTF:  
      pszFormat = TEXT("RTFFORMAT_RTF"); 
      break;  
       
   default:  
      return FAILURE;  
      break;  
   } 
    
   // 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);  
   } 
	else 
		return nRet; 
    
   free(pText);  
 
	return SUCCESS; 
}

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Help Version 20.0.2020.4.5

LEADTOOLS Raster Imaging C++ Class Library Help

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Summary of Features

Functions:	Class Members
Topics:	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