IOCTL_PANEL_GET_BACKLIGHT_REDUCTION - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers

// ntddvdeo.h

// CTL_CODE(0x0023, 0x306, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_PANEL_GET_BACKLIGHT_REDUCTION 0x00230C18
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Windows Driver Kit DDI reference (ni-ntddvdeo-ioctl_panel_get_backlight_reduction)

IOCTL_PANEL_GET_BACKLIGHT_REDUCTION IOCTL

Major Code: [[XREF-LINK:IRP_MJ_DEVICE_CONTROL]

Description

Panel control IOCTLs must/can be handled by the monitor, OEM panel, or port/miniport driver.

Parameters

Major code

Input buffer

Input buffer length

Output buffer

Output buffer length

Input/output buffer

Input/output buffer length

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code.

View the official Windows Driver Kit DDI reference

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