diff --git a/src/meshlab/GLLogStream.cpp b/src/meshlab/GLLogStream.cpp
new file mode 100644
index 000000000..ffd7b719b
--- /dev/null
+++ b/src/meshlab/GLLogStream.cpp
@@ -0,0 +1,40 @@
+
+#include <qfont.h>
+#include <stdio.h>
+
+#include "GLLogStream.h"
+
+using namespace std;
+void GLLogStream::Log(int Level, const char * f, ... )
+{
+  char buf[4096];
+  va_list marker;
+  va_start( marker, f );     
+
+  vsprintf(buf,f,marker);
+  va_end( marker );              
+
+  S.push_back(make_pair<int,string>(Level,buf));
+}
+
+void GLLogStream::Save(int Level, const char * filename )
+{
+  FILE *fp=fopen(filename,"wb");
+  list<pair <int,string> > ::iterator li;
+  for(li=S.begin();li!=S.end();++li)
+    fprintf(fp,(*li).second.c_str());
+}
+
+
+void  GLLogStream::glDraw(QGLWidget *qgl, int Level, int nlines)
+{
+  static QFont qf("Helvetica",8);
+  const int LineWidth=15;
+  list<pair <int,string> > ::iterator li;
+  li=S.end();
+  advance(li,-nlines); 
+  if(li==S.end()) li=S.begin();
+  int StartLine=qgl->height() - (nlines+1) * LineWidth;
+  for(;li!=S.end();++li)
+      qgl->renderText(20,StartLine+=LineWidth,(*li).second.c_str(),qf);
+}
diff --git a/src/meshlab/GLLogStream.h b/src/meshlab/GLLogStream.h
new file mode 100644
index 000000000..a066f95b5
--- /dev/null
+++ b/src/meshlab/GLLogStream.h
@@ -0,0 +1,68 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004                      
+\/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *   
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+/****************************************************************************
+  History
+$Log$
+Revision 1.1  2005/11/16 23:19:22  cignoni
+Initial Draft release; still to be adapted to our needs.
+
+Revision 1.1  2005/04/01 15:43:42  fiorin
+Initial commit
+
+Revision 1.2  2005/03/18 13:45:32  fiorin
+*** empty log message ***
+
+Revision 1.1  2005/03/15 20:26:43  fiorin
+*** empty log message ***
+
+Revision 1.2  2005/02/22 16:28:48  fiorin
+*** empty log message ***
+
+Revision 1.1  2004/07/12 14:02:14  cignoni
+Initial Commit
+
+
+****************************************************************************/
+
+#ifndef GLLOGSTREAM_H
+#define GLLOGSTREAM_H
+
+#include <list>
+#include <string>
+#include <utility>
+#include "LogStream.h"
+
+class GLLogStream : public LogStream
+{
+public:
+  void glDraw(QGLWidget *qgl, int Level, int nlines);
+  void Save(int Level, const char *filename);
+  void Clear() {S.clear();}
+	void Log(int Level, const char * f, ... );
+ 
+private:
+  std::list<std::pair<int,std::string> > S;
+};
+
+#endif //GLLOGSTREAM_H
diff --git a/src/meshlab/LogStream.h b/src/meshlab/LogStream.h
new file mode 100644
index 000000000..c12600999
--- /dev/null
+++ b/src/meshlab/LogStream.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+* VCGLib                                                            o o     *
+* Visual and Computer Graphics Library                            o     o   *
+*                                                                _   O  _   *
+* Copyright(C) 2004																								 \/)\/    *
+* Visual Computing Lab                                            /\/|      *
+* ISTI - Italian National Research Council                           |      *
+*                                                                    \      *
+* All rights reserved.                                                      *
+*                                                                           *
+* This program is free software; you can redistribute it and/or modify      *   
+* it under the terms of the GNU General Public License as published by      *
+* the Free Software Foundation; either version 2 of the License, or         *
+* (at your option) any later version.                                       *
+*                                                                           *
+* This program is distributed in the hope that it will be useful,           *
+* but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+* GNU General Public License (http://www.gnu.org/licenses/gpl.txt)          *
+* for more details.                                                         *
+*                                                                           *
+****************************************************************************/
+/****************************************************************************
+  History
+$Log$
+Revision 1.1  2005/11/16 23:19:22  cignoni
+Initial Draft release; still to be adapted to our needs.
+
+Revision 1.2  2005/07/22 11:16:25  fiorin
+out-of-core
+volume partition
+
+Revision 1.1  2005/04/01 15:43:42  fiorin
+Initial commit
+
+Revision 1.7  2005/03/31 12:03:04  fiorin
+*** empty log message ***
+
+Revision 1.6  2005/03/18 13:45:32  fiorin
+*** empty log message ***
+
+Revision 1.5  2005/03/16 22:36:45  fiorin
+*** empty log message ***
+
+Revision 1.4  2005/03/16 17:19:24  fiorin
+*** empty log message ***
+
+Revision 1.3  2005/03/15 20:23:02  fiorin
+*** empty log message ***
+
+Revision 1.2  2005/02/22 16:28:48  fiorin
+*** empty log message ***
+
+Revision 1.1  2004/07/12 14:02:14  cignoni
+Initial Commit
+
+
+****************************************************************************/
+
+#ifndef LOGSTREAM_H
+#define LOGSTREAM_H
+
+#ifdef _WINDOWS
+#include <GL/glew.h>
+#include <qgl.h> 
+#endif //_WINDOWS
+
+
+class LogStream 
+{
+public:
+  typedef enum {Error=0, Warning=1, Info=2, Debug=3, Direct=4, OnlyFileLog=5, OnlyConsole=6} Level ;
+  
+	virtual void Log(int Level, const char * f, ... ) = 0;
+
+#ifdef _WINDOWS
+	virtual void glDraw(QGLWidget *qgl, int Level, int nlines) = 0;
+#endif
+};
+
+#endif