This is a unique ID for a keyboard for the time it is connected to the system, and is never reused for the lifetime of the application.
If the keyboard is disconnected and reconnected, it will get a new ID.
The value 0 is an invalid ID.
See Implementation
This is a unique ID for a keyboard for the time it is connected to the system, and is never reused for the lifetime of the application.
If the keyboard is disconnected and reconnected, it will get a new ID.
The value 0 is an invalid ID.