Re: [Plib-users] Problem with setLabel, weirdness ensues.

[cory b. <co...@gm...>]

Thank you everyone, that fixed it.

Cory

On Wed, Jun 11, 2008 at 4:22 PM, Fay John F Dr CTR USAF 46 SK
<joh...@eg...> wrote:
> Sounds like I have one less thing to do this evening.
>
> Jan, thank you very much.
>
> John F. Fay
> Technical Fellow
> Jacobs Technology TEAS Group
> 850-883-1294
>
> -----Original Message-----
> From: pli...@li...
> [mailto:pli...@li...] On Behalf Of Jan
> Reucker
> Sent: Wednesday, June 11, 2008 3:21 PM
> To: pli...@li...
> Subject: Re: [Plib-users] Problem with setLabel, weirdness ensues.
>
> Am Wed, 11 Jun 2008 15:55:57 -0400 schrieb "cory barton"
> <co...@gm...>:
>
>
>> void init_pui_widgets( void ) {
>>       //unused variable bbb
>>       char bbb[ PUSTRING_MAX ]; //if I remove this setLabel() fails!
>>       char txt[ PUSTRING_MAX ];
>>       puInit();
>
> Hi,
>
> this won't work, because txt is only allocated on the stack (local
> variable), and it will be destroyed at the end of the function.
> Introducing bbb cures the problem because it pushes txt further down
> on the stack, thus avoiding that it is overwritten by the rest of
> your code. If you introduce another function that uses more stack
> space, chances are that the above code won't work anymore.
>
> puObject::setLabel() does not copy the string; it just copies the
> pointer to the string. Therefore you have to provide a buffer
> that doesn't go out of scope as long as your widget exists.
>
> Kind regards,
> Jan R.
>
> --
> Jan Reucker
> email: jan dot reucker at web dot de
> web:   http://www.reucker-online.de
>
> ------------------------------------------------------------------------
> -
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services for
> just about anything Open Source.
> http://sourceforge.net/services/buy/index.php
> _______________________________________________
> plib-users mailing list
> pli...@li...
> https://lists.sourceforge.net/lists/listinfo/plib-users
>
> -------------------------------------------------------------------------
> Check out the new SourceForge.net Marketplace.
> It's the best place to buy or sell services for
> just about anything Open Source.
> http://sourceforge.net/services/buy/index.php
> _______________________________________________
> plib-users mailing list
> pli...@li...
> https://lists.sourceforge.net/lists/listinfo/plib-users
>