VioDeRegister

Bindings:  C, MASM 

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

 VioDeRegister   ( ) 
 

 rc (USHORT) - return 
    Return code descriptions are: 

    0         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.