khand (KHAND) - input

Keyboard handle created by UniCreateKeyboard.

eshift (ULONG) - input

Effective shift state. This is an output from UniUpdateShiftState.

scan (VSCAN) - input

PM scan code that indicates the key. Note that this does not indicate the action (make, break, repeat).

uc (UniChar *) - output

Unicode character.

vdk (VDKEY *) - output

Virtual or dead key.

bscan (BYTE *) - output

BIOS scan code.

result (int) - returns

ULS_BADHANDLE

Bad keyboard handle.
ULS_SUCCESS
The function was successful.
For a full list of error codes and the decimal and hexadecimal values of the error codes, see Error Codes.