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Archived:Applying actions on list box items using Symbian C++

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m (Protected "TSS000647 - Applying actions on list box items": KB [edit=sysop:move=sysop])

Revision as of 16:03, 24 August 2007



Applying actions on list box items



Platform(s): Device(s), SW version(s):
S60 1st Edition
S60 2nd Edition and FP1, FP2, FP3
S60 3rd Edition and FP1


Symbian C++


UI, UI components


Below is a code snippet demonstrating how to apply actions on a list box item selected by the user.
The code to create a simple list box can be obtained from the link below:
It is possible to apply any actions (e.g., displaying a popup or a dialog) by catching key events for a list box that currently has keyboard focus. This is done in the OfferKeyEventL() function of the container class that owns the list box.
    TKeyResponse CMyExampleAppView::OfferKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType)
        if(aType != EEventKey)
            return EKeyWasNotConsumed;
            case EKeyUpArrow:
            case EKeyDownArrow:
                // Forward up and down key press events to the list box
                return iListBox->OfferKeyEventL( aKeyEvent, aType );
            case EKeyOK: // display an information note when item is selected
                _LIT(KFormatMessage, "Selected item: %d");
                TInt idx = iListBox->CurrentItemIndex();
                TBuf<32> message;
                message.Format(KFormatMessage, idx);
                CAknInformationNote* Note = new (ELeave) CAknInformationNote;
                return EKeyWasConsumed;
        return EKeyWasNotConsumed;
Also make sure to add this line
    AddToStackL( iAppView );
in AppUi’s ConstructL() to add the view/container to the control stack and receive OfferKeyEventL() calls.

Creation date:

May 10, 2007

Last modified:

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