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# PR_DestroyPollableEvent
Close the file descriptor associated with a pollable event and release
related resources.
## Syntax
```{code}
NSPR_API(PRStatus) PR_DestroyPollableEvent(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`.