MFC extension class CBitArray | CodeGuru

MFC extension class CBitArray

Environment: Visual C++ 6, Windows 95/98/Me/NT/2000/XP The class CBitArray behaves like a specialization of the MFC template class CArray. A real specialization is not possible because of a missing simple data type for a bit. For maximum efficiency the bits are packed into a dynamic array of unsigned longs. You can easily modify the type […]

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CodeGuru Staff
CodeGuru Staff
Nov 27, 2001
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Environment: Visual C++ 6, Windows 95/98/Me/NT/2000/XP

The class CBitArray behaves like a specialization of the MFC
template class CArray. A real specialization is not possible
because of a missing simple data type for a bit.

For maximum efficiency the bits are packed into a dynamic array of
unsigned longs. You can easily modify the type of the date
containing the bits (see typedef ULONG T in the declaration of
CBitArray). CBitArray implements all member functions
of the MFC class including the operator function [] (both for
l-values and r-values).

The private member functions Copylr, Copyrl, and
X are derived from the same-named functions of the class
bitstring written by P.J. Plauger and are published with
permission of the author.

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