VioDeRegister: Difference between revisions

Latest revision as of 10:39, 10 March 2020

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

Syntax

VioDeRegister ()

Parameters

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.

Bindings

C

#define INCL_VIO

USHORT  rc = VioDeRegister(VOID);
USHORT  rc;            /* return code */

MASM

EXTRN  VioDeRegister:FAR
INCL_VIO            EQU 1

CALL   VioDeRegister

Returns WORD

@@ Line 1: / Line 1: @@
-==Description==
+This call deregisters a video subsystem previously registered within a session.
-This call deregisters a video subsystem previously registered within a session.
 ==Syntax==
-<PRE>
+  VioDeRegister ()
-  VioDeRegister ( )
-</PRE>
 ==Parameters==
-N/A
+;rc (USHORT) - return:Return code descriptions are:
+*0 NO_ERROR
-==Return Code==
+*404 ERROR_VIO_DEREGISTER
- rc (USHORT) - return
+*430 ERROR_VIO_ILLEGAL_DURING_POPUP
+*465 ERROR_VIO_DETACHED
-Return code descriptions are:
+*494 ERROR_VIO_EXTENDED_SG
-* 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.
+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==
+==Bindings==
-===C Binding===
+===C===
 <PRE>
 #define INCL_VIO
 USHORT  rc = VioDeRegister(VOID);
+USHORT  rc;            /* return code */
-USHORT           rc;            /* return code */
 </PRE>
-===MASM Binding===
+===MASM===
 <PRE>
 EXTRN  VioDeRegister:FAR
@@ Line 42: / Line 33: @@
 Returns WORD
 </PRE>
-==Related Functions==
-* VioRegister
-[[Category:The OS/2 API Project]]
+[[Category:Vio]]