Returns information about a sheet in a workbook
[C++]
static int GetDocument(
   CXlOper& xloData,
   short int type_num,
   const char* name_text = 0
);
A reference to a CXlOper that will contain the desired data if the function succeeds.
Type_num is a number that specifies what type of cell information you want.
Name_text is the name of an open document.
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.
Header: xlfuncs.h