C / C++ / MFC

  ISomeCOMComponent* pInterface;

...
  CoInitialize ( NULL );
...
  CoCreateInstance(..., (void**) &pInterface  );
...
  // Do something with the Interface returned .
...
  pInterface->Release();
...
  CoUninitialize();

<br />
int myfunction(FileInfo afile, CString fileName)<br />
{<br />
 int wordfile=0;<br />
	CString msg;<br />
  CString filetype = afile->type;<br />
  //filetype.MakeLower();<br />
	<br />
  int found =0;<br />
  <br />
	SHELLEXECUTEINFO lpExecInfo;<br />
  lpExecInfo.cbSize  = sizeof(SHELLEXECUTEINFO);      <br />
	lpExecInfo.lpVerb = "open"; // to open WordPrinting program<br />
  lpExecInfo.lpDirectory = NULL;   <br />
  lpExecInfo.nShow = SW_SHOW ;  // show command prompt with normal window size <br />
  lpExecInfo.hInstApp = (HINSTANCE) SE_ERR_DDEFAIL ;   //WINSHELLAPI BOOL WINAPI result;<br />
		<br />
	// afile that has to print manually<br />
  if(filetype.CompareNoCase(".xls") == 0 || filetype.CompareNoCase(".csv") == 0 || filetype.CompareNoCase(".csv") == 0|| filetype.CompareNoCase(".wks") == 0 || filetype.CompareNoCase(".zip")==0)<br />
  { <br />
    <br />
		else if(filetype.CompareNoCase(".xls") == 0 || filetype.CompareNoCase(".csv") == 0|| filetype.CompareNoCase(".wks") == 0)<br />
    {<br />
      found = 1;      <br />
      AfxMessageBox(" EXCEL FILE FOUND !!!\n\tPrint it manually");          <br />
      lpExecInfo.lpFile = "j:\\smp\\smp\\printExcel\\debug\\printexcel.exe";  // the PrintExcel program to format and print an excel file <br />
			lpExecInfo.lpParameters = fileName; // excel file name as an argument to PrintExcel Program.<br />
			msg.Empty();<br />
			msg = "Printing " + fileName + " completed.\n Press OK to continue...";<br />
      <br />
			<br />
    }//end printing excel<br />
<br />
    else if(filetype.CompareNoCase(".doc")== 0 || filetype.CompareNoCase(".rtf")==0 || filetype.CompareNoCase(".htm") == 0  || filetype.CompareNoCase(".html")==0)<br />
    {<br />
			wordfile = 1;<br />
      found = 1;   <br />
			lpExecInfo.lpFile = "j:\\smp\\smp\\wordprinting\\debug\\wordprinting.exe";  // the WordPrinting program to format and print an word or html file<br />
			lpExecInfo.lpParameters = fileName; // file name as an argument to WordPrinting Program.<br />
<br />
		}// end printing MS Word document<br />
    <br />
		else if(filetype.CompareNoCase(".msg")==0)<br />
		{<br />
			lpExecInfo.lpFile = fileName;// 			lpExecInfo.lpParameters = NULL; // <br />
	<br />
		}//end Printing MSG email file<br />
			<br />
		ShellExecuteEx(&lpExecInfo);  <font color="red">here where I got error for second file.</font><br />
     <br />
    //wait until a file is finished printing<br />
    if(lpExecInfo.hProcess !=NULL)<br />
    {<br />
      ::WaitForSingleObject(lpExecInfo.hProcess, INFINITE);<br />
      ::CloseHandle(lpExecInfo.hProcess);<br />
    } <br />
		if(wordfile != 1)<br />
			MessageBox(msg);<br />
<br />
	}//end manual print.<br />
	  return found;<br />
}<br />