TGEventHandler.cxx

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// @(#)root/gui:$Id: TGEventHandler.cxx
// Author: Bertrand Bellenot   29/01/2008
 
/*************************************************************************
 * Copyright (C) 1995-2008, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
/** \class TGEventHandler
    \ingroup guiwidgets
*/
 
 
#include "TGEventHandler.h"
#include "TGWindow.h"
#include "TVirtualX.h"
 
 
////////////////////////////////////////////////////////////////////////////////
/// Handle the event. Returns true if the event has been handled,
/// false otherwise.
 
Bool_t TGEventHandler::HandleEvent(Event_t *ev)
{
   return fWindow->HandleEvent(ev);
}
 
////////////////////////////////////////////////////////////////////////////////
/// Send message (i.e. event) to window w. Message is encoded in one long
/// as message type and up to two long parameters.
 
void TGEventHandler::SendMessage(const TGWindow *w, Longptr_t msg, Longptr_t parm1,
                                 Longptr_t parm2)
{
   Event_t event;
 
   if (w) {
      event.fType   = kClientMessage;
      event.fFormat = 32;
      event.fHandle = gROOT_MESSAGE;
 
      event.fWindow  = w->GetId();
      event.fUser[0] = msg;
      event.fUser[1] = parm1;
      event.fUser[2] = parm2;
      event.fUser[3] = 0;
      event.fUser[4] = 0;
 
      gVirtualX->SendEvent(w->GetId(), &event);
   }
}