Releases ownership of (unlocks) the physical display buffer.
- VioHandle (HVIO) - input
- VIO presentation-space handle.
- Reserved. Must be 0.
- rc (APIRET) - returns
- VioScrlUnLock returns one of the following values:
- 0 NO_ERROR
- 367 ERROR_VIO_UNLOCK
- 421 ERROR_VIO_INVALID_PARMS
- 430 ERROR_VIO_ILLEGAL_DURING_POPUP
- 436 ERROR_VIO_INVALID_HANDLE
This call releases the screen lock that is set by VioScrLock. The VioScrUnLock call must be issued by the same thread that issued VioScrLock.