IOCTL_VIDEO_UNSHARE_VIDEO_MEMORY IOCTL (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.
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.
Output buffer
None
Status block
The miniport driver does not set the Information member of the STATUS_BLOCK structure.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddvdeo.h |