Re: Invalid pointer

From:
=?Utf-8?B?dGhlamFja29mYWxs?= <thejackofall@discussions.microsoft.com>
Newsgroups:
microsoft.public.vc.language
Date:
Mon, 7 Jan 2008 11:43:01 -0800
Message-ID:
<05886C58-A0A6-4D0D-AF7D-06247DE0FBEF@microsoft.com>
Really? I've used the cast from an example. I want to use std::string
because it is more flexible than CString. When I parse and extract data from
a XML file, it gives me _bstr_t type. From _bstr_t, how can I safely convert
to string?

Appreciate much.
J
--
Be Cool!

"Giovanni Dicanio" wrote:

"thejackofall" <thejackofall@discussions.microsoft.com> ha scritto nel
messaggio news:039D0EC2-4DFD-4FEA-BBF9-FFC150828DFE@microsoft.com...

Here is my constructor and the rest. I am really puzzled about this.

#include "InsertDependency.h"

InsertDependency::InsertDependency()
{
_ID = "";
_MustBeforeLink = "";
}

InsertDependency::InsertDependency(string ID, string MustBeforeLink)
{
_ID = ID;
_MustBeforeLink = MustBeforeLink;
}


Is 'string' the std::string?

In your first post in the thread you wrote:

InsertDependency* pInsertDependency = new InsertDependency((LPCTSTR) ID,
(LPCTSTR) MustBeforeLink);


in this case the LPCTSTR cast is wrong.

If you want LPCTSTR strings, you may consider using CString from ATL/MFC
instead of std::string...

string& InsertDependency::GetID()
{
return (_ID);
}


I would define a const GetXxxx method, e.g.

  LPCTSTR InsertDependency::GetID() const
  {
      return ((LPCTSTR) _ID); // assume "CString _ID" data member
  }

If you want to modify the string values, you can implement a separate
SetXxxxx method.

Giovanni

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