// video.h

typedef struct _VIDEO_CHILD_STATE_CONFIGURATION {
  ULONG             Count;
  VIDEO_CHILD_STATE ChildStateArray[ANYSIZE_ARRAY];
} VIDEO_CHILD_STATE_CONFIGURATION, *PVIDEO_CHILD_STATE_CONFIGURATION;
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Windows Driver Kit DDI reference (ns-video-_video_child_state_configuration)

_VIDEO_CHILD_STATE_CONFIGURATION structure

Description

The VIDEO_CHILD_STATE_CONFIGURATION structure contains an array of VIDEO_CHILD_STATE structures, each holding the state of a particular child device.

Members

`Count`

Specifies the number of structures in the ChildStateArray member.

`ChildStateArray`

Is an array of VIDEO_CHILD_STATE structures. Each element of this array contains the ID and state for a particular child device.

Remarks

The video port driver sends a VIDEO_CHILD_STATE_CONFIGURATION structure to the miniport driver for the following IOCTLs:

IOCTL_VIDEO_VALIDATE_CHILD_STATE_CONFIGURATION, in which the video port driver queries the miniport driver to determine whether the specified state for each child device in ChildStateArray is valid.
IOCTL_VIDEO_SET_CHILD_STATE_CONFIGURATION, in which the video port driver requests the miniport driver to make the specified state change for each child device in ChildStateArray.

VIDEO_CHILD_STATE_CONFIGURATION - NtDoc