| CommandT1, T2 | A generic implementation of the ICommand interface. |
| Key | A class that describes a general virtual key. |
| Keyboard | A virtual keyboard templated control. |
| KeyboardLayout | A UserControl that represents a generic empty Keyboard Layout. |
| KeyRoutedEventArgs | A routed event that represents a part of a virtual key click. |
| MathConverter | A converter for simple math operations. |
| RepeatKey | Implementation taken from RepeatButton |
| ToggleKey | A key class that will change state only once when clicked. |