Locks a SafeArray and retrieves a pointer to its data.
_SafeArrayAccessData($pSafeArray, ByRef $pArrayData)
| $pSafeArray | Pointer to the SafeArray. |
| $pArrayData | [out] Pointer to the SafeArray's data. |
| Success: | 0 |
| Failure: | Non-zero HRESULT and sets @error to 1 (DllCall failure). |