VioModeUndo

This call allows one thread within a process to cancel a VioModeWait issued by another thread within the same process.

VioModeUndo

(OwnerIndic, KillIndic, Reserved)

OwnerIndic (USHORT) - input

Indicates whether the thread issuing VioModeUndo wants ownership of VioModeWait to be reserved for its process.

Value

Definition
0
Reserve ownership
1
Give up ownership.
KillIndic (USHORT) - input
Indicates whether the thread (with the outstanding VioModeWait) should be returned an error code or be terminated.

Value

Definition
0
Return error code
1
Terminate thread.
Reserved (USHORT) - input
Reserved word of 0s.
rc (USHORT) - return
Return code descriptions are:
• NO_ERROR 421
  ERROR_VIO_INVALID_PARMS
  422
  ERROR_VIO_FUNCTION_OWNED
  427
  ERROR_VIO_NO_MODE_THREAD
  430
  ERROR_VIO_ILLEGAL_DURING_POPUP
  465
  ERROR_VIO_DETACHED
  486
  ERROR_VIO_BAD_RESERVE
  494
  ERROR_VIO_EXTENDED_SG
  Remarks

  VioModeUndo may be issued only by a thread within the process that owns VioModeWait. The thread issuing VioModeUndo can either reserve ownership of the VioModeWait function for its process or give up ownership. The thread whose VioModeWait is cancelled is optionally terminated.

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