variables using ClassView and Class wizard

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From: seia0106 (miahmed67_at_yahoo.com)
Date: 04/03/04 

Date: 3 Apr 2004 11:04:28 -0800

"Scott McPhillips [MVP]" <scottmcp@mvps.org.nothere> wrote in message news:<uLZOE#xFEHA.3456@tk2msftngp13.phx.gbl>...
> seia0106 wrote:
>
> > Hello everyone.
> > In a MFC program I want to define two variables one of template type
> > MytemplateClass<int> X;
> > and to assign another variable to a ActiveX control(Wang Control of
> > windows).
> > CImgEdit m_bImage1;
> >
> > I tried to define first variable(template type) using 'Class View'
> > and second variable(control type) using 'Class Wizard'. But in both
> > cases i got the error.
> >
> > "Unhandled exception in myprogram.exe (NTDLL.DLL) 0xc0000005:Access
> > Violation"
> >
> > I looked into some books and papers but could not find out what is
> > causing this error here and how it can be fixed.
> > Would someone please tell me what is it that i am doing wrong here and
> > how it can be corrected.
> > Thanks.
>
> Both class view and class wizard are simply typing aids. The way the
> code compiles and executes has nothing to do with how the code was
> created.
>
> The error can not be diagnosed without seeing the lines of code that
> caused it. An access violation means your code has a bug, probably from
> incorrect use of pointers or array indexes. Make sure you are building
> the debug configuration of your program, then run it in the debugger.
> You need to find out what point in your code causes the problem. If the
> access violation occurs while debugging then the debugger's stack window
> is especially useful in showing you how your code led to this error.

Thank you Scott for your reply.

I only have the 'release version' of the program that i am trying to
improve. Iniitally the breakpoints could not be set. After changing
project settings in C++ tab to 'program database' and in Linker tab to
generate debug info the release version can be debugged now.
But my problem persists. That is when i define a new variable in my
main class(mytemplateclass<int> X or when i assign variables(of any
type) to a control(any control) on my MFC GUI, then program runs fine
and gives correct results but when program exits then above 'access
violation error' occurs. I wonder if this has something to do with
Debug/Release. And if it is so how can
I solve it or what changes i have to made to prject settings or what i
have to do for making changes to this program, which i only have in
release mode?
I am quite new to MFC programming and this problem is puzzling for me.
Can someone please give some hint what could be causing this error and
how to fix it? thanks.

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