VioDeRegister: Difference between revisions

Revision as of 04:37, 13 February 2017

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

Syntax

VioDeRegister ( )

Parameters

none

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

@@ Line 1: / Line 1: @@
-==Description==
 This call deregisters a video subsystem previously registered within a session.
 ==Syntax==
-<PRE>
   VioDeRegister ( )
-</PRE>
 ==Parameters==
-N/A
+none
 ==Return Code==
   rc (USHORT) - return
 Return code descriptions are:
+* 0      NO_ERROR
-* 0      NO_ERROR
+* 404  ERROR_VIO_DEREGISTER
-* 404        ERROR_VIO_DEREGISTER
+* 430  ERROR_VIO_ILLEGAL_DURING_POPUP
-* 430        ERROR_VIO_ILLEGAL_DURING_POPUP
+* 465  ERROR_VIO_DETACHED
-* 465        ERROR_VIO_DETACHED
+* 494  ERROR_VIO_EXTENDED_SG
-* 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.
+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==
@@ Line 43: / Line 39: @@
 </PRE>
 ==Related Functions==
-* VioRegister
+*[[VioRegister]]
-[[Category:The OS/2 API Project]]
+[[Category:Vio]]