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http://blog.csdn.net/utopia2006/archive/2008/05/30/2495667.aspx
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·½·¨£ºÔÚHandleWsEventL()ÖÐÆÁ±Î¹Ò»ú¼üKAknUidValueEndKeyCloseEvent,ÔÚÖµÔÚavkon.hrhÖж¨Ò壬ʵ¼ùÖз¢ÏÖ8.0sdkµÄavkon.hrhûÓж¨ÒåKAknUidValueEndKeyCloseEvent£¬Î¨ÓÐÊÖ¹¤Ìí¼Ó¶¨Òå#define  KAknUidValueEndKeyCloseEvent   0x101F87F0
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void CMyClientAppUi::HandleWsEventL(const TWsEvent &aEvent, CCoeControl *aDestination)
{
 switch (aEvent.Type())
 {
 case KAknUidValueEndKeyCloseEvent:
 break;
 default:
 CAknAppUi::HandleWsEventL(aEvent, aDestination);
 }
}
// ----------------------------------------------------
// CPocoClientAppUi::HandleCommandL(TInt aCommand)
// takes care of command handling
// ----------------------------------------------------
//
void CMyClientAppUi::HandleCommandL(TInt aCommand)
{
 switch ( aCommand )
 {
 case EEikCmdExit:
  {
   Exit();    
   break;
  }
  // TODO: Add Your command handling code here
 
 default:
  break;     
 }
 
}
//----------------------------------------------------------------------------------------------------------------------------------------------------------------------
ÐèÒªµ¯³ö¿òµÄ»°£¬¿É²Î¿¼£ºhttp://discussion.forum.nokia.com/forum/showthread.php?t=191426
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void CBTAlarmAppUi::HandleWsEventL(const TWsEvent &aEvent,
  CCoeControl *aDestination)
 {
 if (KAknUidValueEndKeyCloseEvent == aEvent.Type())//Ϊ¹Ò»ú¼üʱ
  {
  TInt flag;
  flag = ShowGlobalConfirmDialogL(_L("are you sure close application?"));
  //close the application
  i


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