Multi Line ListBox

[arunkr6]

My application is developig in VC++ 2008. I have a List Box. Where I am Loading some Text data from a text file. After Loaded the listBox is as show in the attached figure :

I have used it as a SINGLE SELECTION List Box. Here I would like to change as MULTILINE SELECTION so as to delete the selected List BOX datas.

For the Single Line Delete operation I have written the following code.

       CListBox m_parameterlist;
        unsigned int len = m_parameterlist.GetCurSel();

	if(len==LB_ERR)
	{
		len = m_parameterlist.GetCount();
		len = len-1;
	}
	int current = m_parameterlist.DeleteString(len);
	int newcnt = m_parameterlist.GetCount();	
	CString str;
	if(newcnt>0)
	{
		for(int i = 0;i < newcnt;i++)
		{
			m_parameterlist.GetText( i, str );
		}
	}
	else
		_asm nop;

This has worked. The single line deleted and the remaining datas listed on ListBx But Now the User requirment got modified. I have changed the property to MULTILINE SELCTION. But the coding is confused.... Can u help me plz...