VioDeRegister: Difference between revisions
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This call deregisters a video subsystem previously registered within a session. | |||
This call deregisters a video subsystem previously registered within a session. | |||
==Syntax== | ==Syntax== | ||
VioDeRegister ( ) | VioDeRegister () | ||
==Parameters== | ==Parameters== | ||
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==Return Code== | ==Return Code== | ||
;rc (USHORT) - return:Return code descriptions are: | |||
Return code descriptions are: | * 0 NO_ERROR | ||
* 0 | * 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== | ==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. | ||
== | ==Bindings== | ||
===C | ===C=== | ||
<PRE> | <PRE> | ||
#define INCL_VIO | #define INCL_VIO | ||
USHORT rc = VioDeRegister(VOID); | USHORT rc = VioDeRegister(VOID); | ||
USHORT rc; /* return code */ | |||
USHORT | |||
</PRE> | </PRE> | ||
===MASM | ===MASM=== | ||
<PRE> | <PRE> | ||
EXTRN VioDeRegister:FAR | EXTRN VioDeRegister:FAR | ||
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Returns WORD | Returns WORD | ||
</PRE> | </PRE> | ||
==Related Functions== | ==Related Functions== | ||
*[[VioRegister]] | *[[VioRegister]] | ||
[[Category:Vio]] | [[Category:Vio]] | ||
Revision as of 15:59, 3 January 2019
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.
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