Re: NMLVDISPINFO Structure

From:

"Tom Serface" <tom.nospam@camaswood.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Tue, 8 May 2007 07:32:26 -0700

Message-ID:

<8945212B-79E1-4F0E-B48B-9614AFCB1447@microsoft.com>

As David says, you should text for the LVIF_TEXT before using this buffer.
This routine gets called for lots of different reasons. This article may be
interesting to you:

http://blogs.msdn.com/oldnewthing/archive/2007/03/08/1834556.aspx

Also, when setting the text be sure you don't exceed the buffer.

Tom

"Alamelu" <Alamelu@discussions.microsoft.com> wrote in message
news:C8BE2CA6-58BE-40EC-B7FD-3AC6459F7295@microsoft.com...

In the below code "pDispInfo->item.pszText" is holding some address and is
pointing to some junk value only in release mode, which gives me a
uncaught
expection in that line. But in debug mode "pDispInfo->item.pszText" is
NULL.

void ClassA::OnBeginEditList(NMHDR *pNMHDR, LRESULT *pResult,CListCtrl
&theList)
{
NMLVDISPINFO *pDispInfo = reinterpret_cast<NMLVDISPINFO*>(pNMHDR);
CString strData = pDispInfo->item.pszText ; //Gives uncaught expection
}

Can any body guess why would "pDispInfo->item.pszText" point to some
address
and hold some junk value when we begin to edit List view control. But
logically "pDispInfo->item.pszText" should be NULL when we begin to edit
the
control, isn't it? Why this strange behaviour happens only in release mode

Is there any flag, to check if "pDispInfo->item.pszText" holds any value
and
accordingly retrieve?

Regards,
Alamelu N