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IOCTL_LAMP_SET_EMITTING_LIGHT IOCTL (lamp.h)

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The IOCTL_LAMP_SET_EMITTING_LIGHT control code turns the lamp on or off.

#define IOCTL_LAMP_SET_EMITTING_LIGHT \
    CTL_CODE(IOCTL_LAMP_BASE, 0x0009, METHOD_BUFFERED, FILE_ANY_ACCESS)

Major code

IRP_MJ_DEVICE_CONTROL

Input buffer

Irp->AssociatedIrp.SystemBuffer points to a buffer of type BOOLEAN, with TRUE indicating a request to turn the lamp on; FALSE otherwise.

Input buffer length

Length of a BOOLEAN.

Output buffer

None.

Output buffer length

None.

Status block

The driver sets Irp->IoStatus.Status to STATUS_SUCCESS or the appropriate error status.

If the device has been acquired by a camera driver, the lamp driver should return a STATUS_RESOURCE_IN_USE error via Irp->IoStatus.Status.

Requirements

Requirement Value
Header lamp.h