C / C++ / MFC

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Class MyView<br />
{<br />
    CDC MemDC;<br />
    CBitmap m_MyBitmap;<br />
};<br />
<br />
Class MyView:rawDiag()<br />
{<br />
  CClientDC dc(this);<br />
      <br />
  ---------------<br />
       Drawing code goes here. With default mapping mode <br />
    ---------------<br />
  <br />
<br />
  m_MyBmp.DeleteObject ();<br />
  MemDC.CreateCompatibleDC (&ClientDC);<br />
  m_MyBmp.CreateCompatibleBitmap (&ClientDC, 860, 1100);<br />
  CBitmap *OldBitmap = MemDC.SelectObject (&m_MyBmp);<br />
  MemDC.PatBlt (0,0,860,1100,WHITENESS);<br />
<br />
   if(MemDC.StretchBlt(50, 0, 860, 1100, &ClientDC, 0, 0, 860,<br />
      1100, SRCCOPY) == FALSE)<br />
	AfxMessageBox("Failed to draw WFR diagram"); <br />
    <br />
    MemDC.SelectObject (OldBitmap);<br />
    ClientDC.SetMapMode(MM_LOENGLISH);<br />
}<br />
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Function for saving dc to Bitmap file. This code i got from codeproject post<br />
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Class MyView::SaveDCtoBMP()<br />
{<br />
  CString Filename;<br />
  CFileDialog dlgFile (false,"*.*",NULL, OFN_HIDEREADONLY,"BMP Files: (*.bmp)|*.bmp||");<br />
  dlgFile.m_ofn.lpstrTitle  = "Save As Image File";<br />
	<br />
  int ret = dlgFile.DoModal(); <br />
  if(IDOK == ret)<br />
  {<br />
     Filename = dlgFile.GetFileName ();	<br />
    // Create a temporary bitmap compatible with client DC<br />
    CClientDC clientDC(::AfxGetMainWnd());<br />
    clientDC.SetMapMode (MM_LOENGLISH);<br />
    <br />
    CBitmap TmpBitmap;<br />
    TmpBitmap.CreateCompatibleBitmap(&clientDC, 860, 1100);<br />
    // Replace the bitmap in the DC, even though the DC is const.<br />
    CDC& ncDC = const_cast<CDC&>(MemDC);<br />
    ncDC.SelectObject(TmpBitmap);<br />
    ncDC.SetMapMode (MM_LOENGLISH);<br />
<br />
   // Save the bitmap that is now deselected from the DC.<br />
   CDIBSectionLite	dib;<br />
   HBITMAP hnd = (HBITMAP)m_WfrBmp.GetSafeHandle (); <br />
   dib.SetBitmap (hnd);<br />
   dib.Save(Filename);	<br />
  // Select the bitmap in the DC again.<br />
   ncDC.SelectObject(m_WfrBmp); <br />
  // Done with the bitmap now delete that one.<br />
   TmpBitmap.DeleteObject ();<br />
   }<br />
}<br />
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