int DeleteString( UINT nIndex );
nIndex
Specifies the zero-based index of the string to be deleted.
Deletes an item in a list box.
A count of the strings remaining in the list. The return value is LB_ERR if the nIndex specifies an index greater then the number of items in the list.
LB_DELETESTRING, CListBox::AddString, CListBox::InsertString