C / C++ / MFC

int nTabWidth = 8; m_edit.SetTabStops(nTabWidth); //or optionally....
::SendMessage(m_edit.m_hWnd, EM_SETTABSTOPS, 1, (LPARAM)(LPINT)&nTabWidth);

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Can't create an instance of Command 

	CString por="Driver={MySQL ODBC 5.1 Driver};";
	CString Database="Database="";";
	CString User="User=";
	CString Userp=root;
	CString password=";Password=";
	CString Passwords=root;
	CString option=";Option=3;";
	CString final=por;
	final +=Database;
	final +=User;
	final +=Userp;
	final +=password;
	final +=Passwords;
	final +=option;
	
	CoInitialize (NULL);
		
	_bstr_t strCon(final);

	try	
	{
		HRESULT hr = m_pConn.CreateInstance (__uuidof (Connection));

		if (FAILED (hr))
		{
			
		}
		
		if (FAILED (m_pConn->Open (strCon,bstrString,bstrString1,0)))
		{
			AfxMessageBox ("Can't open datasource");
		}
		GetDlgItemText(IDC_EDIT4,m_cbrow);
		GetDlgItemText(IDC_EDIT1,m_host);
		if(m_host=="localhost")
		{
		}
		else
		{
			MessageBox("There is an error to connect with MySQL. Please check your input parameters or server configuration.","Message",MB_ICONEXCLAMATION);
			return;
		}
		
			AfxMessageBox ("Connection successfully");	
		
			_CommandPtr pCommand;
			hr = pCommand.CreateInstance (__uuidof (Command));
<code>"Erro showing here"</code>
		if (FAILED (hr))
		{
			AfxMessageBox ("Can't create an instance of Command");
			return;
		}
			::_RecordsetPtr pRecordset;
			
			pCommand->ActiveConnection = m_pConn;