C++ Programming for Windows Oct NT

These files have been updated to run with
the October version of Windows NT.  The updates
are minor,  Some #ifdef WIN32 sections have been
removed because a minor bug in the July 92 NT windows.h
file has since been fixed.  The close function in file.cpp
is no longer supported in NT and has been replaced by
_close.

The ListBox::Dir function with an attribute of 0x37
no longer works correctly in Oct 92 NT, so the Baby's Toy
application does not list files correctly.  I am not yet
sure whether this is a bug or a feature of NT.

The include.mak file has been modified because the
meaning of the $(LIB) symbol has changed since July 92.

To install these files, unzip the file cxxp4w in the book 
root directory with the -d option.