KBD_GETSHIFTSTATE (73h) - Shift State

Shift State

A WORD field containing shift states:

High Byte

Has the following settings:

Bit 15

SysReq key down
Bit 14
Caps Lock key down
Bit 13
NumLock key down
Bit 12
ScrollLock key down
Bit 11
Right Alt key down
Bit 10
Right Ctrl key down
Bit 9
Left Alt key down
Bit 8
Left Ctrl key down
Low Byte
Has the following:

Bit 7

Insert on
Bit 6
Caps Lock on
Bit 5
NumLock on
Bit 4
ScrollLock on
Bit 3
Either Alt key down
Bit 2
Either Ctrl key down
Bit 1
Left Shift key down
Bit 0
Right Shift key down

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