function 7

In the User Function window:

Return Type:

Single

Input Parameters:

long a;

OUTPTR b;

Output Parameters:

short w;

char x[30];

long y;

char z;

In the state table:

STRING func7_char, NUMBER func7_long, NUMBER func7_short,
STRING func7_string, NUMBER send3_long;
AssignData(send3_long, "ASSIGN", "2") ;
SendData("CUSTOM_SERVER", "TEST_PARMS", 30, "TEST_PARMS_func7",
        send3_long) ;
ReceiveData("CUSTOM_SERVER", "TEST_PARMS", 30, "TEST_PARMS_func7",
           func7_short, func7_string, func7_long, func7_char) ;

So, using the data in SendData (above), the parameters in ReceiveData have the following values:

func7_short is 438
func7_string is "GAZELLE"
func7_long is 22432

func7_char is 'Y'

Example code

int TEST_PARMS_func7 (long a, char **b)
{
  short w = 438;
  char *x;
  long y = 22432;
  char z = 'Y';
  char *buf_ptr;
  x = "GAZELLE";
  if (a == 2) {
    buf_ptr = TP_buffer;
    *(short *)buf_ptr = w;
    buf_ptr += sizeof(w);
    strcpy(buf_ptr, x);
    buf_ptr += strlen(x) + 1;
    *(long *)buf_ptr = y;
    buf_ptr += sizeof(y);
    *buf_ptr = z;
    buf_ptr += sizeof(z);
    *b = TP_buffer;
    return (0);
  } else {
    return (-1);
  } /* endif */
}

Function 7