Datatypes in Embedded SQL

Hey all.

I've a questoin on embedded SQL. This is more a c question, i know, but i'm
going to ask anyway hoping there's another c developer looking who might be
able to help me out.

Thing is, I'm trying to declare a struct in the embedded SQL part in my
program, but the preprocessor complains about an 'unknown data type in line
162'. Is it not possible at all in Postgres? When i don't use the struct,
passing 4 variables instead, all goes well.

I Am using Postgres 7.0.2.

Regards,
Mic

/* ------------------------------------------------------DBinsRecord--------
does : Inserts a line in the db
args :
return : error code (0 = ok)
---------------------------------------------------------------------------
*/
static int DBinsRecord (
DBstruct *Values
)
{
int nError = 0;

EXEC SQL BEGIN DECLARE SECTION;
DBstruct *pRec = Values;
EXEC SQL END DECLARE SECTION;

EXEC SQL
INSERT INTO channel
(line_nr
,nick
,type
,line)
VALUES
( :pRec->line_nr
, :pRec->nick
, :pRec->type
, :pRec->line);

nError = sqlca.sqlcode;

if (nError)
printf ("error (%d):\n%s\n", nError, sqlca.sqlerrm.sqlerrmc);

return (nError);
}

with
typedef struct {
int line_nr,
type;
char nick[10],
line[160];
} DBstruct;