Returns the names of all workbooks referred to by external references in the workbook specified
static int Links( std::vector<CString>& links, LPCTSTR document_text = "", short int type_num = 1 );
A vector of strings which will be populated with the list of names.
Document_text is the name of a workbook, including its path.
Type_num is a number from 1 to 6 specifying the type of linked workbooks to return.
Zero if the function has been called successfully; non-zero if the function could not be called. See Error codes for a list of return values.
See the Microsoft Excel on-line Help for full details about this function.