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The IOCTL_KEYBOARD_QUERY_ATTRIBUTES request returns information about the keyboard attributes.
Input buffer
Parameters.DeviceIoControl.OutputBufferLength is set to a value greater than or equal to the size, in bytes, of a KEYBOARD_ATTRIBUTES structure.
Input buffer length
The size of a KEYBOARD_ATTRIBUTES structure.
Output buffer
AssociatedIrp.SystemBuffer points to a client-allocated buffer that I8042prt uses to output a KEYBOARD_ATTRIBUTES structure.
Output buffer length
The size of a KEYBOARD_ATTRIBUTES structure.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddkbd.h (include Ntddkbd.h) |
See also
IOCTL_KEYBOARD_QUERY_INDICATORS
IOCTL_KEYBOARD_QUERY_INDICATOR_TRANSLATION