C / C++ / MFC

void CImageAppDlg::OnShow() <br />
{<br />
	// TODO: Add your control notification handler code here<br />
<br />
<br />
<br />
	CString	file;<br />
	file.Empty();<br />
	m_com.ShowOpen();<br />
	file=m_com.GetFileName();<br />
	file.TrimRight();<br />
<br />
<br />
	if(m_hBmpNew != NULL )<br />
		DeleteObject(m_hBmpNew);<br />
	sourcex=sourcey=0;//<br />
	if(file.IsEmpty())<br />
AfxMessageBox("Please Select a picture file");<br />
		else{<br />
			if(file.Right(3)!="bmp")<br />
			AfxMessageBox("Please Select a .bmp file");<br />
			else<br />
			{<br />
	m_hBmpNew =	 (HBITMAP) LoadImage(<br />
	AfxGetInstanceHandle(),  <br />
	file,  <br />
	IMAGE_BITMAP,    <br />
	0,     <br />
	0,    <br />
	LR_LOADFROMFILE); <br />
	if( m_hBmpNew == NULL ){<br />
	AfxMessageBox("Load Image Failed");}<br />
	<br />
   else{<br />
	m_st1.GetClientRect( &rectStaticClient );<br />
	rectStaticClient.NormalizeRect();<br />
	m_size.cx=rectStaticClient.Size().cx;<br />
	m_size.cy=rectStaticClient.Size().cy;<br />
    m_size.cx = rectStaticClient.Width();    // zero based<br />
    m_size.cy = rectStaticClient.Height();    // zero based<br />
<br />
    <br />
  m_st1.ClientToScreen( &rectStaticClient );<br />
  ScreenToClient( &rectStaticClient);<br />
        <br />
    m_pt.x = rectStaticClient.left;<br />
    m_pt.y = rectStaticClient.top;<br />
  GetObject( m_hBmpNew , sizeof(BITMAP), &m_bmInfo );<br />
 VERIFY(m_hBmpOld = (HBITMAP)SelectObject(m_dcMem, m_hBmpNew )  );<br />
<br />
  offsetx= m_pt.x;<br />
  offsety=m_pt.y;<br />
if(m_bmInfo.bmWidth<=m_size.cx)<br />
{<br />
	if((m_size.cx-m_bmInfo.bmWidth)==0)<br />
		offsetx= m_pt.x;<br />
	else<br />
		offsetx= m_pt.x+((m_size.cx-m_bmInfo.bmWidth)/2);<br />
<br />
}<br />
else<br />
if(m_bmInfo.bmHeight<=m_size.cy)<br />
{<br />
	if((m_size.cy-m_bmInfo.bmHeight)==0)<br />
		offsety= m_pt.y;<br />
	else<br />
		offsety= m_pt.y+((m_size.cy-m_bmInfo.bmHeight)/2);<br />
}<br />
else<br />
<br />
  InvalidateRect(&rectStaticClient);<br />
		}<br />
			}<br />
		}<br />
<br />
}<br />