How to arm notify on rs-232 tx drain in QNX6 (?)

[oink]

How to arm notify() that fires
when serial device tx buffer is empty ?

In QNX 4.25 I can do it by dev_arm() with _DEV_EVENT_DRAIN:
dev_arm( dev_fd, rs_proxy, _DEV_EVENT_DRAIN );
/how to do it in QNX 6.3.x ?

[vari]

@oink

How to arm notify() that fires
when serial device tx buffer is empty ?

In QNX 4.25 I can do it by dev_arm() with _DEV_EVENT_DRAIN:
dev_arm( dev_fd, rs_proxy, _DEV_EVENT_DRAIN );
/how to do it in QNX 6.3.x ?