| key | The virtual key code value of the released key. |
| shift | The state of the shift keys and mouse buttons that were pressed at the same time when the key was released.
It is a combination of the following values by bit OR. ssAlt : ALT key was pressed ssShift : SHIFT key was pressed ssCtrl : CTRL key was pressed ssLeft : The left mouse button was pressed ssMiddle : The middle mouse button was pressed ssRight : The right mouse button was pressed |
| process | If you pass false for this parameter when calling the parent class's onKeyUp, the parent class will not perform default processing (such as moving focus) for that key. |