Import Geant4 7.1.0 source tree

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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.                                                             *
+// *                                                                  *
+// * This  code  implementation is the  intellectual property  of the *
+// * GEANT4 collaboration.                                            *
+// * By copying,  distributing  or modifying the Program (or any work *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+//
+// $Id: G4VisExecutive.hh,v 1.1 2005/02/04 16:42:37 johna Exp $
+// GEANT4 tag $Name: geant4-07-01 $
+//
+// 
+// John Allison 2nd February 2005 (based on MyVisManager, 24th January 1998).
+//
+// Class description
+//
+// Concrete Visualization Manager that implements the virtual function
+//   RegisterGraphicsSystems.  This is executed when you Initialise()
+//   or Initialize() the vis manager.  It exploits C-pre-processor
+//   variables G4VIS_USE_DAWN, etc., which are set by the GNUmakefiles
+//   if environment variables of the same name are set.
+//
+// Include this file and write code to instantiate G4VisExecutive just
+//   once as beginning of operations.  Before you compile, set
+//   appropriate environment variables.  If you change your
+//   environment you must force recompilation (the make files will not
+//   detect the need to do this).  Typically, your main program file
+//   will contain:
+//
+// #ifdef G4VIS_USE
+// #include "G4VisExecutive.hh"
+// #endif
+// ...
+// int main() {
+//   ...
+// #ifdef G4VIS_USE
+//   // Instantiate and initialise Visualization Manager.
+//   G4VisManager* visManager = new G4VisExecutive;
+//   //  visManager -> SetVerboseLevel (verbosityString);
+//   //  visManager -> RegisterGraphicsSystem (new G4XXX);
+//   visManager -> Initialize ();
+// #endif
+//   ...
+// #ifdef G4VIS_USE
+//   G4cout << "Deleting vis manager..." << G4endl;
+//   delete visManager;
+//   G4cout << "Vis manager deleted." << G4endl;
+// #endif
+//
+// The implementation is included as an .icc file because - for those
+//   graphics systems that need external libraries - only those
+//   systems that have been selected by the flags may be instantiated
+//   without causing unresolved references (only the user knows which
+//   libraries are available on his/her computer).  It also ensures
+//   that libraries can be linked in the right order, without circular
+//   dependencies.  (Note that some graphics systems, notable those
+//   that write files for off-line viewing, do not suffer these
+//   restrictions and are always registered.)  Additional graphics
+//   systems, XXX say, can be individually registered before
+//   invocation of Initialise() with RegisterGraphicsSystem(new XXX).
+//
+// Alternatively, you can implement an empty function here and just
+//   register the systems you want in your main(), e.g.:
+//   G4VisManager* visManager = new G4VisExecutive;
+//   visManager -> RegisterGraphicsSystem (new MyGraphicsSystem);
+//
+// See class description of G4VisManager for more details.
+
+#ifndef G4VISEXECUTIVE_HH
+#define G4VISEXECUTIVE_HH
+
+#include "G4VisManager.hh"
+
+class G4VisExecutive: public G4VisManager {
+
+public: // With description
+
+  G4VisExecutive ();
+
+private:
+
+  void RegisterGraphicsSystems ();
+
+};
+
+#include "G4VisExecutive.icc"
+
+#endif
+