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Article View: borland.public.cppbuilder.nativeapi
Article #9079

Re: CALLBACK Functions

#9079
From: McKool
Date: Fri, 13 Aug 2004 11:16
99 lines
3665 bytes
Compiler give me an error: "Size of CALLBACKATTR is unknow or zero".  A
write follow the description that i receive:
//------------
Function:

UINT32 COTI_InitBoard(UINT16 board_seg, COTI_t_UsrIntHdlr fp_int_hdlr,

COTI_t_UsrExHdlr fp_exc_hdlr);

Description:

Register the given interface in the COTI. This includes resetting the
interface and starting the

firmware on intelligent interfaces.

The call-back handlers are also set with COTI_InitBoard:

� Exception handler for error handling (application specific).

� Receive interrupt handler for the interrupt handling (application
specific).

See type definitions of the call-back handlers.

� fp_int_hdlr:

Function pointer to the interrupt function for processing of receive
objects.

(NULL -> no interrupt processing)

/* receive interrupt handler */

typedef void (CALLBACKATTR *COTI_t_UsrRxIntHdlr)( UINT16 count,

COTI_CAN_OBJ FAR * p_obj);

� fp_exc_hdlr:

Function pointer to exception handler for processing of occurred errors.

(NULL -> no exception handler)

/* exception handler */

typedef void (CALLBACKATTR * COTI_t_UsrExcHdlr)( COTI_FUNC_NUM func_num,

INT32 err_code,

UINT16 ext_err,

char * message );

//--------------------------------------

That is just what i have for do that.  So I only have two handler, one for
each function. Thats "CALLBACKATTR" mmm, i have no idea. Is not define in
the documentation.. what can i do?



"Andrue Cope [TeamB]" <no.spam@spammy.com> schrieb im Newsbeitrag
news:411c98fb$1@newsgroups.borland.com...
> McKool wrote:
>
> > typedef void (CALLBACKATTR *t_UsrRxIntHdlr)( UINT16 count, CAN_OBJ
> > FAR * p_obj);
>
> void CALLBACKATTR YourCallBackFunction1( UINT16 count,
>                                          CANOBJ FAR * p_obj )
> {
>   ... whatever
> }
>
> > typedef void (CALLBACKATTR * t_UsrExcHdlr)( FUNC_NUM func_num, INT32
> > err_code, UINT16 ext_err,char * message );
>
> void CALLBACKATTR YourCallBackFunction2( FUNC_NUM func_num,
>                                          INT32    err_code,
>                                          UINT16   ext_err,
>                                          char *   message )
> {
>   .. whatever again
> }
>
> > UINT32 InitBoard( UINT16 BoarSegment,
> >                                t_UsrIntHdlr CallbackfunctionHandler,
> >                                t_UsrExHdlr ExeptionFunctionHandler);
>
> InitBoard( yourBoarSegment,
>            YourCallBackFunction1,
>            YourCallBackFunction2 );
>
> That should do it but might need some tweaking - let me know :)
> -- 
> Andrue Cope [TeamB]
> [Bicester, Uk]
> http://info.borland.com/newsgroups/guide.html
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Subject: Re: CALLBACK Functions
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