| key | The virtual key code value of the pressed key. |
| shift | The state of the shift keys and mouse buttons that were pressed at the same time when the key was pressed.
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 If the keyboard is pressed for a long time and a key repeat occurs, the following values are also combined. ssRepeat : Key repeat occurred |
| process | If you pass false for this parameter when calling the parent class's onKeyDown, the parent class will not perform default processing (such as moving focus) for that key. |