cc_ResultMsg( )

Description | Caution | Example | Errors | See Also

Name:	int cc_ResultMsg(linedev, ResultCode, msg)
Inputs:	LINEDEV linedev	line device handle
	int ResultCode	function return value
	char **msg	pointer to the address where the result message is stored
Returns:	0 on success < 0 on failure
Includes:	cclib.h
Category:	System tools
Mode:	synchronous
Technology:	BRI/2; BRI/SC; PRI (all protocols)

Description

cc_ResultMsg( ) is a convenience function that interprets the function return code. The cc_ResultMsg( ) function retrieves either the cause value of an event from the cc_CauseValue( ) function or the function return code from the cc_ResultValue( ) function.

Parameter	Description
linedev:	The line device handle.
ResultCode:	The cause value of the event or return code (retrieved from cc_ResultValue( ) or cc_CauseValue( )).
msg:	The pointer to the buffer address where the result message will be stored.

Caution

None

Example

#include <windows.h>   /* For Windows applications only */  
#include <stdio.h>  
#include <errno.h>  
#include "srllib.h"  
#include "dtilib.h"  
#include "cclib.h"  
void main()  
{  
   LINEDEV   devhdl    = 0;  
   CRN       crn = 0;  
   char     *devname = "dtiB1T1";  
   if ( cc_Open( &devhdl, devname, 0 ) < 0 )   
   {  
      printf("Error opening device: errno = %d\n", errno);  
      exit(1);  
   }  
   printf("Waiting for call\n");  
   if ( cc_WaitCall(devhdl, &crn, NULL, -1, EV_SYNC) < 0 )  
         procdevfail(devhdl);  
   if ( cc_AnswerCall(crn, 0, EV_SYNC) < 0 )  
         callfail(crn);  
         .  
         .  
         .  
         .  
         .  
   /* Drop the call */  
   if ( cc_DropCall(crn, NORMAL_CLEARING, EV_SYNC) < 0 )  
         callfail(crn);  
   if ( cc_ReleaseCall(crn) < 0 )  
         callfail(crn);  
   if ( cc_Close(devhdl) < 0 )   
      printf("Error closing device, errno = %d\n", errno);  
}  
int callfail(CRN crn)  
{                 
        LINEDEV ld;  
         cc_CRN2LineDev(crn,&ld);  
         procdevfail(ld);  
}  
int procdevfail(LINEDEV handle)  
{  
        int reason;  
        char *msg;  
        reason = cc_CauseValue(handle);  
        cc_ResultMsg(handle, reason, &msg);  
        printf("reason = %x - %s\n",reason,msg);  
}

Errors

If the function returns < 0 to indicate failure, use the cc_CauseValue( ) function to retrieve the reason code. Error codes are defined in the files ccerr.h, isdnerr.h, and isdncmd.h.

Typically, a < 0 return code for the cc_ResultMsg( ) function indicates that the function reference (the line device number) is not valid for the function call.

See Also

• cc_ResultValue( )

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