RE: i'm a C++ beginer and i have a question.

From:

=?Utf-8?B?QnJ1bm8gdmFuIERvb3JlbiBbTVZQIFZDKytd?= <bruno_nos_pam_van_dooren@hotmail.com>

Newsgroups:

microsoft.public.vc.language

Date:

Tue, 24 Oct 2006 01:23:01 -0700

Message-ID:

<A133574E-AF0B-4D10-8943-9ACBA6A9D59E@microsoft.com>

CLR Class Library
In my head file:

using namespace System;
using namespace System::Xml;
using namespace System::Net::Mail;
namespace CPTest {

    public ref class clsSendMail
    {
    public:
        void getMailMessage(String^ v_Content);
        void doSendMail();
    private:
        String^ v_MailContent;
        MailMessage objMailMessage;
    };
}

In my cpp File:

#include "stdafx.h"
#include "CPTest.h"
void getMailMessage(String^ v_Content)
{
        objMailMessage= gcnew MailMessage("aa@aa.aa","aa@aa.aa","test
mail",v_Content);
        return ;
}
..............

my question is :
1.why compiler told me "'objMailMessage' : undeclared identifier"?

Because your implementation of getMailMessage is a plain function, the way
you define it. That should be clsSendMail::getMailMessage. Otherwise the
compiler does not know that your definition of getMailMessage is the
implementation of that class method.

2.In .Net class, when define an object of System::String. i have a problem
just like this below.
(for example:
"String^ a;" is correct.
But why "String a;" is wrong.)

Because strings are allocated on the managed heap. 'a' can only be a
reference to a string (^), 'a' cannot be the string itself, since that does
not live on the stack.

--
Kind regards,
    Bruno.
    bruno_nos_pam_van_dooren@hotmail.com
    Remove only "_nos_pam"