C / C++ / MFC

m_cs.cx = ImgWidth()*zoom_const;<br />
m_cs.cy = ImgHeight()*zoom_const;<br />
SetScrollSizes(MM_TEXT, m_cs);<br />
InvalidateRect(NULL, true);

if (zoom_const > 1)<br />
{<br />
 dib->Draw(&dc, true, 0,0,myRect.Width(), myRect.Height(),<br />
       sp.x/zoom_const,sp.y/zoom_const,<br />
       myRect.Width()/zoom_const,myRect.Height()/zoom_const);<br />
}<br />
else<br />
 dib->Draw(&dc, false, 0,0,myRect.Width(), myRect.Height(),sp.x,sp.y,myRect.Width(), myRect.Height());

//In CMainFrame:
if(pActiveView->IsKindOf( RUNTIME_CLASS(CRView)) ){
				   CRView *pView = (CRView*)pActiveView;
				   if (pMsg->message == WM_LBUTTONDOWN){
					   pView->SendMessage(WM_LBUTTONDOWN,MAKELPARAM(pView->m_MousePos.x,pView->m_MousePos.y), (LPARAM)0);    //Send Left Click Message to CRealView
					  }
				}

if( cFilePointer.Open(strFileName ,CFile::modeRead)  )
{
	strContents.Empty();
	dwRead = 0;
        // Read the contents of the file and store in the CString object.
	do
	{
		dwRead = cFilePointer.Read(cBuffer,100);
		if ( dwRead > 0)
			strContents.operator +=(cBuffer);
	}while(dwRead > 0 );

        // Retrieve the length of the string and convert to Hex decimal number
	int iTotalLength = strContents.GetLength();
	sprintf(cLengthOfString,"%4x",iTotalLength);
	for ( int iIndex = 0;iIndex<4;iIndex++)
	{
                // If the hexadecimal number is only one digit then convert the others to zero.e.g., if the length is 5, then convert to 0005
		if ( cLengthOfString[iIndex] == 32 )
			cLengthOfString[iIndex] = 48;
                // Store the length (which is in Hexa decimal format to the 6th, 7th, 8th and 9th characters of the file
		strContents.SetAt(iIndex+6,cLengthOfString[iIndex]);
	}
	cFilePointer.Close();
	int iTemp = 0;
	int iIndexOfChar = 0;
	int iFileNameLength = strFileName.GetLength();
	CString strSlash("\\");
        
        // Add the slash to escape so that strFileName will have a proper path.
	while ( iTemp < iFileNameLength)
	{
		iIndexOfChar = strFileName.Find(strSlash,iTemp);
		if ( iIndexOfChar == -1 )
			break;

		strFileName.Insert(iIndexOfChar,strSlash);
		iTemp = iIndexOfChar + 2;
	}

        //  Re-create the file with the header information modified.
	hFile = CreateFile(strFileName,GENERIC_WRITE,0,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
	if ( hFile )
		cFilePointer.m_hFile = hFile;
	if(cFilePointer)
	{
		cFilePointer.Write(strContents,iTotalLength);
		cFilePointer.Close();
	}
}