Key event problem

[ZeeMoo]

My application work in the background. I need to detect key event (num 4) and send it to foreground.


My appui construct:

void CHelloWorldBasicAppUi::ConstructL()
{

BaseConstructL();

iAppView = CHelloWorldBasicAppView::NewL(ClientRect());

AddToStackL(iAppView);

CEikonEnv::Static()->RootWin().EnableReceiptOfFocus(EFalse);
CEikonEnv::Static()->RootWin().SetOrdinalPosition(-1000, ECoeWinPriorityNeverAtFront);

RWindowGroup iWindowGroup = CCoeEnv::Static() -> RootWin();
TInt32 iCallBackHandle = iWindowGroup.CaptureKey(EKeyApplication0, 0, 0);
iWindowGroup.CancelCaptureKey(iCallBackHandle);
}

My appui HandleKeyEventL

TKeyResponse CHelloWorldBasicAppUi::HandleKeyEventL(
const TKeyEvent& /*aKeyEvent*/ ,TEventCode /*aType*/)
{
return EKeyWasNotConsumed;
}

Other method's in my appui:

// ----------------------------------------------------
// CMyAppUi::SendToBackground()
// Send the application to background.
// ----------------------------------------------------
//
void CHelloWorldBasicAppUi::SendToBackground()
{
// Construct en empty TApaTask object
// giving it a reference to the Window Server session
TApaTask task(iEikonEnv->WsSession( ));

// Initialise the object with the window group id of
// our application (so that it represent our app)
task.SetWgId(CEikonEnv::Static()->RootWin().Identifier());

// Request window server to bring our application
// to background
task.SendToBackground();
}

// ----------------------------------------------------
// CMyAppUi::BringToForeground()
// Bring the application to foreground.
// ----------------------------------------------------
//
void CHelloWorldBasicAppUi::BringToForeground()
{
// Construct en empty TApaTask object
// giving it a reference to the Window Server session
TApaTask task(iEikonEnv->WsSession( ));

// Initialise the object with the window group id of
// our application (so that it represent our app)
task.SetWgId(CEikonEnv::Static()->RootWin().Identifier());

// Request window server to bring our application
// to foreground
task.BringToForeground();
}


// ---------------------------------------------------------
// CTextTrisContainer::HandleKeyEvent
// Translate the key events to Game specific key events.
// ---------------------------------------------------------
//
TKeyResponse CHelloWorldBasicAppUi::OfferKeyEventL( const TKeyEvent& aKeyEvent ,TEventCode aType )
{
switch( aType )
{
case( EEventKeyDown ):
{
switch( aKeyEvent.iScanCode )
{
case( 0x34 ): //For the 4 key
{
BringToForeground();
break;
}

default:
break;
}
break;
}
case( EEventKeyUp ):
{
switch( aKeyEvent.iScanCode )
{

case( 0x34 ): //For the 4 key
{
SendToBackground();
break;
}
default:
break;
}
break;
}
default:
{
break;
}
}

return EKeyWasConsumed;
}

In Document i use this to hide application:

void CHelloWorldBasicDocument::UpdateTaskNameL(CApaWindowGroupName* aWgName)
{
CEikDocument::UpdateTaskNameL(aWgName);
aWgName->SetHidden(ETrue);

}

But this is don't work. There i can make mistakes? Detecting key event?

[symbianyucca]

from SDK help:
KeyApplication0 == Code for an Application launcher key.


So it is not number 4 you are capturing.

yucca

[ZeeMoo]

2yucca -> can i use this application in the simulator?

[ZeeMoo]

With EKeyApplication0 - ... don't work too.

[david.caabeiro]

You need to implement the appui's HandleWsEventL() function

[ZeeMoo]

2PushL: Do you have example, how to use HandleWsEventL()?