VioDeRegister

This call deregisters a video subsystem previously registered within a session.

VioDeRegister

( )

rc (USHORT) - return

Return code descriptions are:
• NO_ERROR 404
  ERROR_VIO_DEREGISTER
  430
  ERROR_VIO_ILLEGAL_DURING_POPUP
  465
  ERROR_VIO_DETACHED
  494
  ERROR_VIO_EXTENDED_SG
  Remarks

  VioDeRegister must be issued by the same process that issued the previous VioRegister. After VioDeRegister is issued, subsequent video calls are processed by the Base Video Subsystem.

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