Printing Long CStrings to Multiple Pages

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Environment: VC6 SP4, NT4 SP3

This is an very easy example how to print a (long) CString buffer ( CStringList ) on several pages and how to get the Print Preview to work properly. I don’t know if this is the right way to do this but I have looked everywhere but haven’t found a good solution. I havent had time to figure out how to set the pInfo->SetMaxPage(nMaxPage); parameter yet. Maybe somebody could post it in the article.

void CPrintExampleView::OnPrint(CDC* pDC, CPrintInfo* pInfo)

{

  CRect strRect(0,0,0,0);

  CRect rcCalcText(0,0,0,0);

  int nStringheight=0,nStringwidth=0, nRowSpace = 0;

  TEXTMETRIC tm;

  pDC->SetMapMode(MM_TEXT); // Sets the mapping mode
  // Set the start of the Print Position

  nPrintPos = m_PrintStrings.GetHeadPosition();
  int nCurPage = (pInfo->m_nCurPage);

  for ( int c=1; c <= nCurPage; c++)

  {

    int iY = 300;  // Initial Y coordinate

    for( nPrintPos; nPrintPos != NULL && (iY < m_iVerticalSize ); )

    {

      pDC->GetTextMetrics(&tm);
      CString strTmp = m_PrintStrings.GetAt( nPrintPos );
      // Space between rows depending on the fontsize.

      nRowSpace = tm.tmExternalLeading;
      // Calc the Height of the String, that can different

      // if using newline etc.

      pDC->DrawText(strTmp, rcCalcText, DT_CALCRECT);

      nStringheight = rcCalcText.Height();
      strRect.left=200;

      strRect.right = pDC->GetDeviceCaps(HORZRES);

      strRect.top=iY;

      strRect.bottom = strRect.top + nStringheight;


      //Draw the tabbed text to a specific position

      CString tab1,tab2;



      // Instead of \t I choosed to control my tab position myself.

      int tabPos = strTmp.Find(“\t”);

      if ( tabPos != -1 )

      {

        tab1 = strTmp.Left(tabPos);

        tab2 = strTmp.Right(strTmp.GetLength()-tabPos-1);

            //  AfxMessageBox(tab2);

      }

      else

        tab1 = strTmp;



      // Draw the text..

      if ( nCurPage == c )

      {

        // Attach header font to the header text.

        pDC->SelectObject(&m_HeadingFont);

        PrintPageHeader(pDC,pInfo);



        // Attach Body font to the body text.

        pDC->SelectObject(&m_BodyFont2);
        pDC->DrawText( tab1,

                       strRect,

                       DT_WORDBREAK | DT_EXPANDTABS);

        strRect.left=strRect.right/6*2;

        pDC->SelectObject(&m_BodyFont);

        pDC->DrawText( tab2,

                       strRect,

                       DT_WORDBREAK | DT_EXPANDTABS);
      }
      m_PrintStrings.GetNext( nPrintPos );



      // Calculate the next start position

      int x = strRect.bottom;

      iY = ( nRowSpace + x);

    }

    if ((iY > m_iVerticalSize) && nCurPage == c)

      break;

  }

}

Downloads

Download demo project – 21 Kb