IOCTL_PANEL_GET_BACKLIGHT_REDUCTION IOCTL (ntddvdeo.h)

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

Major code

IRP_MJ_DEVICE_CONTROL

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.

Requirements