VioShowBuf (FAPI): Difference between revisions
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==Return Code== | ==Return Code== | ||
;rc (USHORT) - return:Return code descriptions are: | |||
Return code descriptions are: | *0 NO_ERROR | ||
* 0 | *355 ERROR_VIO_MODE | ||
* 355 | *430 ERROR_VIO_ILLEGAL_DURING_POPUP | ||
* 430 | *436 ERROR_VIO_INVALID_HANDLE | ||
* 436 | *465 ERROR_VIO_DETACHED | ||
* 465 | |||
==Remarks== | ==Remarks== | ||
| Line 22: | Line 21: | ||
===PM Considerations=== | ===PM Considerations=== | ||
This function updates the display with the Advanced VIO presentation space. | This function updates the display with the Advanced VIO presentation space. | ||
== | ==Bindings== | ||
=== C | ===C=== | ||
<PRE> | <PRE> | ||
#define INCL_VIO | #define INCL_VIO | ||
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USHORT rc = VioShowBuf(Offset, Length, VioHandle); | USHORT rc = VioShowBuf(Offset, Length, VioHandle); | ||
USHORT | USHORT Offset; /* Offset into LVB */ | ||
USHORT | USHORT Length; /* Length */ | ||
HVIO | HVIO VioHandle; /* Video handle */ | ||
USHORT | USHORT rc; /* return code */ | ||
</PRE> | </PRE> | ||
===MASM | ===MASM=== | ||
<PRE> | <PRE> | ||
EXTRN VioShowBuf:FAR | EXTRN VioShowBuf:FAR | ||
Latest revision as of 17:16, 28 February 2020
This call updates the physical display buffer with the logical video buffer (LVB).
Syntax
VioShowBuf (Offset, Length, VioHandle)
Parameters
- Offset (USHORT) - input
- Starting offset within the logical video buffer at which the update to the screen is to start.
- Length (USHORT) - input
- Length of the area to be updated to the screen.
- VioHandle (HVIO) - input
- This must be zero unless the caller is a Presentation Manager application, in which case it must be the value returned by VioGetPs.
Return Code
- rc (USHORT) - return
- Return code descriptions are:
- 0 NO_ERROR
- 355 ERROR_VIO_MODE
- 430 ERROR_VIO_ILLEGAL_DURING_POPUP
- 436 ERROR_VIO_INVALID_HANDLE
- 465 ERROR_VIO_DETACHED
Remarks
VioShowBuf is ignored unless it is issued by a process that has previously called VioGetBuf and that is currently executing in the foreground.
PM Considerations
This function updates the display with the Advanced VIO presentation space.
Bindings
C
#define INCL_VIO USHORT rc = VioShowBuf(Offset, Length, VioHandle); USHORT Offset; /* Offset into LVB */ USHORT Length; /* Length */ HVIO VioHandle; /* Video handle */ USHORT rc; /* return code */
MASM
EXTRN VioShowBuf:FAR INCL_VIO EQU 1 PUSH WORD Offset ;Offset into LVB PUSH WORD Length ;Length PUSH WORD VioHandle ;Video handle CALL VioShowBuf Returns WORD
Related Functions
- VioGetBuf