At 03:04 PM 11/03/2006, you wrote:

>heLen:
>
>I have called ISC_WAIT_FOR_EVENT , but it still DO NOT wait.
>
>It printed "hello" immediatly.
>
>
>.....
>blength = isc_event_block(&event_buffer, &result_buffer,1, 'NEWSMS');
>
>isc_wait_for_event(status, &SMSDB, (unsigned short)blength, \
> event_buffer, result_buffer);
>
>printf ("hello\n");
>......

isc_wait_for_event doesn't stop your application, it only holds the
client-server interface in a waiting state.

./heLen