No, I am using Codewarrior. I have, since the last mail, tested a little bit
more, and I reached the conclusion that I can have one global variable on the
whole app. If I try to allocate more than that (either by using static
qualifiers inside functions, or by declaring in the main block), I get the
described behaviour: the DA works OK quits perfectly, but when the running app
closes, the Palm crashes with a 'Fatal Error' which I observed to be a
'Privilege Violation' in the MW Debugger.
Richard Hartman wrote:
> I believe that this is due to the lack of callback prolog macros.
> You are using GCC, aren't you? (CW doesn't require the prolog
> for callback functions). These macros do something the A4 register
> so that GCC can access the globals.
>
> Try this:
> static void handleEvent(EventPtr event)
> {
>
> #ifdef __GNUC__
>
> CALLBACK_PROLOGUE
>
> #endif
> static ControlPtr penDownCtl;
> penDownCtl = NULL;
>
> #ifdef __GNUC__
>
> CALLBACK_EPILOGUE
>
> #endif
> }
>
> --
> -Richard M. Hartman
> [EMAIL PROTECTED]
>
> 186,000 mi./sec ... not just a good idea, it's the LAW!
>
>
>
> -----Original Message-----
> From: Sergio Carvalho [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, June 23, 1999 5:58 AM
> To: Palmpilot Developers Forum
> Subject: Desk Accessories and static variables
>
> Hi,
>
> The strangest of bugs has crossed my path. I'm writing a desk accessory, and
> I was getting a 'Privilege Violation' *after* my desk accessory *and* the
> running application quit. After commenting code to isolate the problem, I
> concluded it was caused by a static variable inside a static function. The
> smallest code snippet that caused an error was like this:
>
> static void handleEvent(EventPtr event)
> {
> static ControlPtr penDownCtl;
> penDownCtl = NULL;
> }
>
> If I remove the static qualifier or the assignment, there's no error.
>
> Can anyone explain this? It's just for curiosity. I have already solved the
> problem without a static var.
>
> --
> Sergio Carvalho
> ---------------
> [EMAIL PROTECTED]
>
> If at first you don't succeed, skydiving is not for you
>
--
Sergio Carvalho
---------------
[EMAIL PROTECTED]
If at first you don't succeed, skydiving is not for you
