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# FFEffectUnload(_:)

Removes the effect from the device. If the effect is playing, it is automatically stopped before it is unloaded.

```
func FFEffectUnload(_ effectReference: FFEffectObjectReference!) -> HRESULT
```

## Parameters

`effectReference`

An opaque reference handle to an effect object. This is obtained from a previous call to FFDeviceCreateEffect.

## Return Value

If the method succeeds, the return value is FF_OK. If the method fails, the return value can be one of the following error values:

## Discussion

FFERR_INVALIDPARAM

FFERR_NOTDOWNLOADED

FFERR_GENERIC

FFERR_INTERNAL

FFERR_INVALIDDOWNLOADID

---

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