Archived:Applying actions on list box items using Symbian C++
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[[Category:Technical Solution]][[Category:Symbian C++]][[Category:UI]][[Category:S60 1st Edition]][[Category:S60 2nd Edition]][[Category:S60 3rd Edition]][[Category:S60 3rd Edition, Feature Pack 1]] | [[Category:Technical Solution]][[Category:Symbian C++]][[Category:UI]][[Category:S60 1st Edition]][[Category:S60 2nd Edition]][[Category:S60 3rd Edition]][[Category:S60 3rd Edition, Feature Pack 1]] | ||
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|sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) --> | |sourcecode= <!-- Link to example source code (e.g. [[Media:The Code Example ZIP.zip]]) --> | ||
|installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) --> | |installfile= <!-- Link to installation file (e.g. [[Media:The Installation File.sis]]) --> | ||
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== Description == | == Description == | ||
| − | Below is a code snippet demonstrating how to apply actions on a list box item selected by the user. | + | 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: [[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. | ||
== Solution == | == Solution == | ||
Revision as of 08:50, 21 December 2011
Article Metadata
Compatibility
Platform(s): S60 1st Edition
S60 2nd Edition and FP1, FP2, FP3
S60 3rd Edition and FP1
S60 2nd Edition and FP1, FP2, FP3
S60 3rd Edition and FP1
Article
Created: User:Technical writer 2
(10 May 2007)
Last edited: hamishwillee
(21 Dec 2011)
Overview
Applying actions on list box items
Description
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: 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.
Solution
TKeyResponse CMyExampleAppView::OfferKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType)
{
if(aType != EEventKey)
{
return EKeyWasNotConsumed;
}
switch(aKeyEvent.iCode)
{
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;
Note->ExecuteLD(message);
return EKeyWasConsumed;
}
default:
break;
}
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.
