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TGEventHandler.cxx
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1 // @(#)root/gui:$Id: TGEventHandler.cxx
2 // Author: Bertrand Bellenot 29/01/2008
3 
4 /*************************************************************************
5  * Copyright (C) 1995-2008, Rene Brun and Fons Rademakers. *
6  * All rights reserved. *
7  * *
8  * For the licensing terms see $ROOTSYS/LICENSE. *
9  * For the list of contributors see $ROOTSYS/README/CREDITS. *
10  *************************************************************************/
11 
12 //////////////////////////////////////////////////////////////////////////
13 // //
14 // TGEventHandler //
15 // //
16 //////////////////////////////////////////////////////////////////////////
17 
18 #include "TGEventHandler.h"
19 #include "TGWindow.h"
20 
21 ClassImp(TGEventHandler);
22 
23 ////////////////////////////////////////////////////////////////////////////////
24 /// Handle the event. Returns true if the event has been handled,
25 /// false otherwise.
26 
27 Bool_t TGEventHandler::HandleEvent(Event_t *ev)
28 {
29  return fWindow->HandleEvent(ev);
30 }
31 
32 ////////////////////////////////////////////////////////////////////////////////
33 /// Send message (i.e. event) to window w. Message is encoded in one long
34 /// as message type and up to two long parameters.
35 
36 void TGEventHandler::SendMessage(const TGWindow *w, Long_t msg, Long_t parm1,
37  Long_t parm2)
38 {
39  Event_t event;
40 
41  if (w) {
42  event.fType = kClientMessage;
43  event.fFormat = 32;
44  event.fHandle = gROOT_MESSAGE;
45 
46  event.fWindow = w->GetId();
47  event.fUser[0] = msg;
48  event.fUser[1] = parm1;
49  event.fUser[2] = parm2;
50  event.fUser[3] = 0;
51  event.fUser[4] = 0;
52 
53  gVirtualX->SendEvent(w->GetId(), &event);
54  }
55 }