IOCTL_KEYBOARD_SET_INDICATORS - NtDoc

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

// CTL_CODE(0x000b, 0x002, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_KEYBOARD_SET_INDICATORS 0x000B0008
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Win32 API reference (ni-ntddkbd-ioctl_keyboard_set_indicators)

IOCTL_KEYBOARD_SET_INDICATORS IOCTL

Description

The IOCTL_KEYBOARD_SET_INDICATORS request sets the keyboard indicators.

Parameters

Input buffer

AssociatedIrp.SystemBuffer points to a client-allocated buffer that inputs a KEYBOARD_INDICATOR_PARAMETERS structure. The client sets the indicator parameters in this structure.

Parameters.DeviceIoControl.InputBufferLength is set to a value greater than or equal to the size, in bytes, of a KEYBOARD_INDICATOR_PARAMETERS structure.

Input buffer length

The size of a KEYBOARD_INDICATOR_PARAMETERS structure.

Output buffer

None.

Output buffer length

None.

Input/output buffer

Input/output buffer length

Status block

The Information member is set to zero.

The Status member is set to one of the following values:

-STATUS_DEVICE_NOT_READY

The keyboard interrupt is not initialized.

-STATUS_INVALID_PARAMETER

Parameters.DeviceIoControl.InputBufferLength is less than the size, in bytes, of a KEYBOARD_INDICATOR_PARAMETERS structure, or the specified indicator parameters are invalid.

-STATUS_IO_TIMEOUT

The request timed out.

-STATUS_SUCCESS

The request completed successfully.

See also

IOCTL_KEYBOARD_SET_TYPEMATIC

KEYBOARD_INDICATOR_PARAMETERS

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