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S60平台应用往往需要直接处理按键，主要有两种方法：

一.继承自CAknAppUi的实例使用HandleKeyEventL

TKeyResponse CxxxAppUi::HandleKeyEventL(const TKeyEvent& aKeyEvent,TEventCode aType) 
{
if (aType==EEventKeyDown && (aKeyEvent.iScanCode == EStdKeyDevice0 || aKeyEvent.iScanCode == EStdKeyDevice1 )) 
{
//按左右功能键的处理
}
else
{
//按非左右功能键的处理 
}
return( EKeyWasNotConsumed );
}

二.继承自CCoeControl的实例使用OfferKeyEventL

TKeyResponse CxxxContainer::OfferKeyEventL(const TKeyEvent& aKeyEvent, TEventCode aType )
{
if ( aType == EEventKey )
{
if ( aKeyEvent.iScanCode == EStdKeyDevice0 )
{
//按左功能键的处理
return( EKeyWasNotConsumed );
}
if ( aKeyEvent.iScanCode == EStdKeyDevice1 )
{
//按右功能键的处理
return( EKeyWasNotConsumed );
}
}
return CCoeControl::OfferKeyEventL( aKeyEvent, aType );
}