Re: Windows Error at run-time...

From: Victor Bazarov (v.Abazarov_at_comAcast.net)
Date: 07/21/04 

Date: Wed, 21 Jul 2004 17:06:00 -0400

Reimar Twelker wrote:
> I'm learning OpenGL and unfortunately I am also new to C++...

The two are relatively orthogonal. You can learn C++ without learning
OpenGL and vice versa.

> My problem is that I am not used to pointers (yet) and my little app
> always crashes at run-time...access violation of some sort.
>
> The windows message reads:
> ...the expression <memory address> points to <0x00000000>. The process
> 'written' could not be executed...
>
> I have been trying to fix this for a few days now and I NEED HELP!

What kind of help do you expect? Perhaps you should start by reading
the FAQ: http://www.parashift.com/c++-faq-lite/

>
> ...I don't have to tell you that I don't know ANYTHING about debugging
> in Visual C++ ...:)

You don't need to know anything about debugging in Visual C++ to be
a decent C++ programmer.

>
> I think that my problem is caused by some sort of NULL-pointer I am
> writing...

Yes, looks like it.

> By the way: I have written a class and when I try to create an
> instance, my app doesn't even create an application window but crashes
> on the spot. I came across this (new?) problem when I tried to avoid
> using pointers :| Maybe something is wrong with my class definition
> but I'm not new to OOP, I have been using Java for quite some time...

When you have pointer problems like the one you described, it is most
likely in the implementation, not necessarily in the class definition.

By the way: what C++ book are you using to learn?

V

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