VioSavRedrawUndo

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

VioSavRedrawUndo

(OwnerIndic, KillIndic, VioHandle)

OwnerIndic (USHORT) - input

Indicates whether the thread issuing VioSavRedrawUndo wants ownership of VioSavRedrawWait 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 VioSavRedrawWait should be returned an error code or be terminated.

Value

Definition
0
Return error code
1
Terminate thread.
VioHandle (HVIO) - input
Reserved word of 0s.
rc (USHORT) - return
Return code descriptions are:
• NO_ERROR 421
  ERROR_VIO_INVALID_PARMS
  422
  ERROR_VIO_FUNCTION_OWNED
  428
  ERROR_VIO_NO_SAVE_RESTORE_THD
  430
  ERROR_VIO_ILLEGAL_DURING_POPUP
  465
  ERROR_VIO_DETACHED
  494
  ERROR_VIO_EXTENDED_SG
  Remarks

  The issuing thread can reserve ownership of VioSavRedrawWait for its process or give it up. The thread whose VioSavRedrawWait was cancelled is optionally terminated. VioSavRedrawUndo may be issued only by a thread within the same process that owns VioSavRedrawWait.

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