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In article <4jajk2$17aq@mule1.mindspring.com> abell@mindspring.com
(Andrew Bell) writes:

|> clamage@Eng.sun.com (Steve Clamage) wrote [but much edited by me]:
|> >In article 1e7a@mule1.mindspring.com, abell@mindspring.com (Andrew Bell) writes:
|> >>About casting operators]
|> >[[Are you asking] can you define
|> >a conversion operator from a user-defined class to a predefined type

|> No, I'd want to go the other way.  In the case of "pure wrapper"
|> classes (as I defined in my earlier post), one might want an automatic
|> cast from the original to the wrapper.  In my case, I have created a
|> class to wrap around an OS-defined struct, to give it access safety
|> (the particular class contains a type specifier and a union) and
|> smarter access as well as constructors.

You have it the other way.  The conversion operator is called a
constructor.  Thus, to take a concrete example (based on the deleted
parts of your posting (`stat' is a struct defined by Posix):

    class FileStat : stat
    {
    public :
                        FileStat( stat const& other ) ;
        //  ...
    } ;

If you have a (C) struct stat, it will convert automatically to a
FileStat.  (You can pass it to a function expecting a FileStat, for
example.)
-- 
James Kanze           (+33) 88 14 49 00          email: kanze@gabi-soft.fr
GABI Software, Sarl., 8 rue des Francs Bourgeois, 67000 Strasbourg, France
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