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#define INCL_VIO
 
USHORT VioDeRegister(VOID)
 
The VioDeRegister function restores the functions of the default Vio
subsystem and releases any previously registered Vio subsystem. The function
restores the default Vio subsystem for all processes in the current screen
group.
 
Once a process registers a Vio subsystem, no other process in the screen
group may register a Vio subsystem until the default subsystem is restored.
Only the process registering a Vio subsystem may call the VioDeRegister
function to restore the default Vio subsystem.
 
This function has no parameters.
 
Return Value
 
The return value is zero if the function is successful. Otherwise, it is an
error value, which may be the following:
 
     ERROR_VIO_DEREGISTER
 
See Also
 
VioRegister
 
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