pr_setpollableevent.md

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# PR_SetPollableEvent

Set a pollable event.

## Syntax

```{code}

NSPR_API(PRStatus) PR_SetPollableEvent(PRFileDesc *event);

```

### Parameter

The function has the following parameter:

`event`

: Pointer to a {ref}`PRFileDesc` structure previously created via a call

  to {ref}`PR_NewPollableEvent`.

### Returns

The function returns one of the following values:

- If successful, `PR_SUCCESS`.

- If unsuccessful, `PR_FAILURE`. The reason for the failure can be

  retrieved via {ref}`PR_GetError`.