CList template class ...

SALVATORE.LO-TURCO@st.com
Tuesday, January 16, 1996

     Hi all,
     
     I've had a lot of problems trying to implement a "Function" class made 
     up, among the others, of a list of CPoint using the 
     CList template class of the MFC release 3.0, with 
     Visual C++ 2.0 running under Windows NT 3.51.
     
     In particular, one of these problem is because of calling 
     listOfPoint.AddTail, where listOfPoint is a list of CPoint: the pointer 
     pNewNode (resulting from a NewNode call in the implementation of the 
     AddTail method) sometimes asserts in the ASSERT_VALID(this) statement.
     
     May be its because of my fault, but I'd like to know how it is going with 
     you with the CList template class, whether you too are having any problem 
     or not. Just to know if one should use this class template or, instead, 
     should avoid to use it (at least with the MFC release 3.0).
     
     Thanks in advance.
     
                                                Salvo
     
     
     e-mail: salvatore.lo-turco@st.com

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Mario Contestabile -- Mario_Contestabile.UOS__MTL@UOSMTL2.universal.com
Sunday, January 21, 1996

[Snip-Start()]
    May be its because of my fault, but I'd like to know how it is going with 
     you with the CList template class, whether you too are having any problem 
     or not. Just to know if one should use this class template or, instead, 
     should avoid to use it (at least with the MFC release 3.0).
[Snip-End()]

Do not avoid or postpone its usage. The collection templates are one of the 
most usefull things
in the Microsoft Foundation Classes. Look in the /advanced/collect example.

mcontest@universal.com
www.universal.com

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Philip Liu -- pliu@pcmail.healthvision.ca
Monday, January 22, 1996



It was caused by that CPoint(), the constructor, is not called (?!)
in NewNode() and hence the ASSERT_VALID() asserts. For that
reason, CPoints hv to be created explicitly (thus destroyed) and
passed to the list.

P

 ----------
From:  owner-mfc-l[SMTP:owner-mfc-l@netcom.com]
Sent:  Tuesday, January 16, 1996 5:18 PM
To:  mfc-l
Subject:  CList template class ...

     Hi all,
       

     I've had a lot of problems trying to implement a "Function" class   
made
     up, among the others, of a list of CPoint using the
     CList template class of the MFC release 3.0, with
     Visual C++ 2.0 running under Windows NT 3.51.
       

     In particular, one of these problem is because of calling
     listOfPoint.AddTail, where listOfPoint is a list of CPoint: the   
pointer
     pNewNode (resulting from a NewNode call in the implementation of the   

     AddTail method) sometimes asserts in the ASSERT_VALID(this)   
statement.
       

     May be its because of my fault, but I'd like to know how it is going
with
     you with the CList template class, whether you too are having any
problem
     or not. Just to know if one should use this class template or,   
instead,
     should avoid to use it (at least with the MFC release 3.0).
       

     Thanks in advance.
       

                                                Salvo
       

       

     e-mail: salvatore.lo-turco@st.com

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Mike Blaszczak -- mikeblas@interserv.com
Wednesday, January 24, 1996

On Mon, 22 Jan 96, Philip Liu  wrote:

>It was caused by that CPoint(), the constructor, is not called (?!)
>in NewNode() and hence the ASSERT_VALID() asserts. For that
>reason, CPoints hv to be created explicitly (thus destroyed) and
>passed to the list.

That makes it sound like the CList didn't have an appropriate 
ConstructElements() function, or that the ConstructElements() function wasn't 
working.

.B ekiM
--
TCHAR szReferee[] = "Look!  A skating zebra!";

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