Keyboard declares the messages dispatched to the nodes when Kanzi handles a hardware key event.
The key events handled by Kanzi are the press and release events. These key events are converted into
KeyDownMessage and KeyUpMessage, that includes the translated logical key value and the key modifiers.
Key modifiers are special keys that modify the logical key meaning when pressed together with that
logical key.
Deprecated: In Kanzi 3.8. To handle key messages, use KeyManipulator.