Returns TRUE if the OPER contains 1 row and/or 1 column
[C++]
BOOL IsVector() const;
This function returns TRUE if the OPER contains either a single cell or an array with
one column and/or one row. It returns FALSE if the OPER contains more than row and
more than column.
Use this function to determine whether
VectorCell() and
GetVectorCount() can be used on the COper.
Header: xllplus.h