Subj : Re: Pointers + Stuff
To   : borland.public.cpp.borlandcpp
From : Alistair
Date : Sun Jul 04 2004 05:46 pm

Hi, forget it.

This works just like I have written, I just had a silly bug in my program
that was causing an error.
I wasnt setting the somethings[x] = NULL when i had finished with the
reference inside (the one I cleaned up).

"Alistair" <alistair@nospam.com> wrote in message
news:40e81d55$1@newsgroups.borland.com...
> Hi,
>
> I am just learning out pointers and was trying to manage assigned memory:
>
> struct s_Something
> {
>     void *data;
>     int length;
>     int datatype; //0 - image, 1 - wav, 2 - string, 3 - etc...
>     bool temp;
> };
>
> I can happily use this, e.g.
>
> s_Something mySomething;
>
> mySomething.data = malloc(80);
> mySomething.length = 80;
>
> then use it like
>
> dosummet(&mySomething);
> //in dosummet -> mySomething->data  etc...
>
> Now, I create a few of these through out my app and it works fine, but
here
> is where i am stuck. I want to create a pointer list, if its possible,
e.g.
>
> s_Something *somethings[256];
>
> and each something is a pointer to an object I have created like above.
The
> reason is that I can then
> loop the somethings and free(mySomthingx.data).
>
> I only want the list for storing references to the objects so i can free
> them.  I then pass the objects via pointers through functions etc to be
> used.
>
> so at the end of my main application loop I can loop the list of pointers,
> getting the objects using memory and then see if they are temp (temporary)
> and if so, i can free the memory.
>
> Can someone give me some idea how this can be done without a lot of
> technical speak, I am new to C++ and I would like to get an understanding
> without long words / phrases i dont yet understand!
>
> Thanks
>
> Alistair
>
>

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