Revision as of 23:32, 18 May 2011 by hamishwillee (Talk | contribs)

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

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Article Metadata
Platform(s): S60 1st Edition
S60 2nd Edition and FP1, FP2, FP3
S60 3rd Edition and FP1
S60 3rd Edition FP1
S60 3rd Edition (initial release)
S60 2nd Edition (initial release)
S60 1st Edition
Created: (10 May 2007)
Last edited: hamishwillee (18 May 2011)


Applying actions on list box items


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:
[[How to create a simple listbox
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.

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