VioDeRegister

Description

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

Syntax

 VioDeRegister ( )

Parameters

N/A

Return Code

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.

Example Code

C Binding

#define INCL_VIO

USHORT  rc = VioDeRegister(VOID);

USHORT           rc;            /* return code */

MASM Binding

EXTRN  VioDeRegister:FAR
INCL_VIO            EQU 1

CALL   VioDeRegister

Returns WORD

Related Functions

• VioRegister