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ni-ntddvdeo-ioctl_video_unshare_video_memory.md

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UID title description old-location tech.root ms.date keywords ms.keywords req.header req.include-header req.target-type req.target-min-winverclnt req.target-min-winversvr req.kmdf-ver req.umdf-ver req.ddi-compliance req.unicode-ansi req.idl req.max-support req.namespace req.assembly req.type-library req.lib req.dll req.irql targetos req.typenames f1_keywords topic_type api_type api_location api_name
NI:ntddvdeo.IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY
IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY (ntddvdeo.h)
Unmaps a video hardware frame buffer and video RAM from the virtual address space of the requester that was mapped by an IOCTL_VIDEO_SHARE_VIDEO_MEMORY request.
display\ioctl_video_unshare_video_memory.htm
display
05/10/2018
IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY IOCTL
IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY, IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY control, IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY control code [Display Devices], Video_IOCTLs_114ef264-3c3f-400d-bef0-4ebd2a4af035.xml, display.ioctl_video_unshare_video_memory, ntddvdeo/IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY
ntddvdeo.h
Windows
Windows
IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY
ntddvdeo/IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY
APIRef
kbSyntax
HeaderDef
Ntddvdeo.h
IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY

IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY IOCTL

-description

Unmaps a video hardware frame buffer and video RAM from the virtual address space of the requester that was mapped by an IOCTL_VIDEO_SHARE_VIDEO_MEMORY request.

-ioctlparameters

-ioctl-major-code

-input-buffer

The VRP InputBuffer contains a VIDEO_SHARE_MEMORY structure specifying the process and the virtual address where the video memory is mapped. The memory is unmapped by calling VideoPortUnmapMemory.

-input-buffer-length

-output-buffer

None

-output-buffer-length

-in-out-buffer

-inout-buffer-length

-status-block

The miniport driver does not set the Information member of the STATUS_BLOCK structure.

-see-also

IOCTL_VIDEO_SHARE_VIDEO_MEMORY

VIDEO_SHARE_MEMORY

VideoPortUnmapMemory