C / C++ / MFC

strcpy (pbBuff, *psBuffer->GetBuffer(0));
*psBuffer->ReleaseBuffer();

 DWORD __stdcall MEditStreamInCallback(DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb)<br />
{<br />
	CString *psBuffer = (CString *)dwCookie;<br />
	TRACE(*psBuffer);<br />
TRACE("cb is %d",cb);  //debugger says its 4092<br />
<br />
TRACE("getlength is %d",psBuffer->GetLength()); debugger says its 9, correct<br />
<br />
<br />
<br />
	//if (cb < psBuffer->GetLength()) cb = psBuffer->GetLength(); //never gets done cause cb is so big!<br />
<br />
//MSDN says loop until length-1, so I forcibly set<br />
<br />
cb =9;<br />
<br />
	TRACE("length is %d",cb);<br />
<br />
	for (int i=0;i<cb;i++)<br />
<br />
	<br />
	{<br />
<br />
			TRACE("index i is %d", i);<br />
		*(pbBuff+i) = psBuffer->GetAt(i);<br />
	}<br />
<br />
	*pcb = cb;  \\this looks weird. cb never changes....not that I can see<br />
<br />
	*psBuffer = psBuffer->Mid(cb);<br />
<br />
	return 0;<br />
}

DWORD CALLBACK _LoadRtfCallback(
DWORD dwCookie, // (in) pointer to the string
LPBYTE pbBuff, // (in) pointer to the destination buffer
LONG cb, // (in) size in bytes of the destination buffer
LONG FAR *pcb // (out) number of bytes transfered
)

void CRichEgView::OnReadin() 
{
	CString sWriteText; //Where the text will be streamed from
	sWriteText="Rich text is shown here in sample project";

	// This is hard-coded for example purposes. It is likely this would
	// be read from file or another source.
	EDITSTREAM es;
	es.dwCookie = (DWORD)&sWriteText; // Pass a pointer to the CString to the callback function
	es.pfnCallback = MEditStreamInCallback; // Specify the pointer to the callback function

	GetRichEditCtrl().StreamIn(SF_RTF,es); // Perform the streaming
}

void CTrain1View::OnReadin() 
{
	CString sWriteText; //Where the text will be streamed from
	sWriteText="Rich text is shown here in sample project";

	// This is hard-coded for example purposes. It is likely this would
	// be read from file or another source.
	EDITSTREAM es;
	es.dwCookie = (DWORD)&sWriteText; // Pass a pointer to the CString to the callback function
	es.pfnCallback = _LoadRtfCallback; // Specify the pointer to the callback function

	m_richedit.StreamIn(SF_RTF,es); // Perform the streaming
}

DWORD CALLBACK _LoadRtfCallback(
   DWORD dwCookie,      // (in) pointer to the string
   LPBYTE pbBuff,       // (in) pointer to the destination buffer
   LONG cb,             // (in) size in bytes of the destination buffer
   LONG FAR *pcb        // (out) number of bytes transfered
   )
{
   LPCTSTR pszMsg = (LPCTSTR)dwCookie;

   // number of bytes to copy
   *pcb = _tcslen( pszMsg ) * sizeof(TCHAR);

   // limiting it up to the buffer's size
   if( *pcb > cb )
      *pcb = cb;

   // copying the string to the buffer
   memcpy( pbBuff, pszMsg, *pcb );

   // advancing to the end of the string
   pszMsg += *pcb / sizeof(TCHAR);

   // if it's the end of the string, returns NULL;
   // otherwise, returns a pointer to the next char to transfer as the cookie
   return ( *pszMsg != '\0' ) ? (DWORD)pszMsg : NULL;
}