Re: find class of a class instance

From:
"Tom Serface" <tom.nospam@camaswood.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Fri, 27 Apr 2007 14:09:31 -0700
Message-ID:
<4582119E-BE7B-414E-A9B8-928AF13682C0@microsoft.com>
Hi Ali,

I think OP needs to see which one of the derived classes it is, but you're
right that with virtual functions would make this pretty moot.

Tom

"AliR (VC++ MVP)" <AliR@online.nospam> wrote in message
news:M2sYh.6201$2v1.1659@newssvr14.news.prodigy.net...

Although Toms answer is what you were looking for,

Isn't polymorphism (virtual functions) what you would use to eliminate the
need to cast a derived object for cases like this?

AliR.

"wanwan" <ericwan78@yahoo.com> wrote in message
news:1177699603.648421.193360@r3g2000prh.googlegroups.com...

On Apr 24, 5:59 pm, Joseph M. Newcomer <newco...@flounder.com> wrote:

If you have turned on Run Time Type Information (RTTI, on by default in
VS2005, if I
recall), you can find out what the type is, and even the print string
for the class name.
Look at RTTI.

This is not the question you asked, but I'm interpreting what I think
you might have
meant.
                                joe

On 24 Apr 2007 11:29:14 -0700, wanwan <ericwa...@yahoo.com> wrote:

is there a function that returns to me the class of an instance?


Joseph M. Newcomer [MVP]
email: newco...@flounder.com
Web:http://www.flounder.com
MVP Tips:http://www.flounder.com/mvp_tips.htm


Sorry, that's not what I need.

For example, I have a base class called CPerson, and I have two
derived classes called CMale and CFemale. I use CList class to keep
track of a list of CPerson objects. After I retrieve the object from
the list, I need a function to find out what derived class the object
is, so I can cast the object accordingly for data processing.

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