Key events

Figure: Key presses generate key events

Key events are generated when a device user presses one or more device key buttons. The application framework delivers the event to the application that has focus. The TKeyEvent structure is used to contain the key event details delivered to the application. For more information on TKeyEvent, see TKeyEvent.

The structure is as follows:

struct TKeyEvent
    TUint iCode;
    TInt iScanCode;
    TUint iModifiers; // State of modifier keys
    TInt iRepeats; // Count of auto repeats generated

The following events are generated by means of a single key press and release:


The first event indicates that a key has been pressed down. The second event indicates that a character has been received from the keyboard. The third event is sent when the button has been released. These events are described in the iCode and iSCanCode members of TKeyEvent.

For more information on possible data contained in EEventKey, see TKeyCode.