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diff --git a/examples/tetrix/gtetrix.h b/examples/tetrix/gtetrix.h
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+/****************************************************************************
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of an example program for TQt.  This example
+** program may be used, distributed and modified without limitation.
+**
+*****************************************************************************/
+
+#ifndef GTETRIX_H
+#define GTETRIX_H
+
+#include "tpiece.h"
+
+
+class GenericTetrix
+{
+public:
+    GenericTetrix(int boardWidth = 10,int boardHeight = 22);
+    virtual ~GenericTetrix();
+
+    void clearBoard(int fillRandomLines = 0);
+    void revealNextPiece(int revealIt);
+    void updateBoard(int x1,int y1,int x2,int y2,int dontUpdateBlanks = 0);
+    void updateNext(){if (showNext) showNextPiece();}
+    void hideBoard();
+    void showBoard();
+    void fillRandom(int line);
+
+    void moveLeft(int steps = 1);
+    void moveRight(int steps = 1);
+    void rotateLeft();
+    void rotateRight();
+    void dropDown();
+    void oneLineDown();
+    void newPiece();
+    void removePiece();
+
+    int  noOfClearLines()                     {return nClearLines;}
+    int  getLinesRemoved()                    {return nLinesRemoved;}
+    int  getPiecesDropped()                   {return nPiecesDropped;}
+    int  getScore()                           {return score;}
+    int  getLevel()                           {return level;}
+    int  boardHeight()                        {return height;}
+    int  boardWidth()                         {return width;}
+
+    virtual void drawSquare(int x,int y,int value) = 0;
+    virtual void gameOver() = 0;
+
+    virtual void startGame(int gameType = 0,int fillRandomLines = 0);
+    virtual void drawNextSquare(int x,int y,int value);
+    virtual void pieceDropped(int dropHeight);
+    virtual void updateRemoved(int noOfLines);
+    virtual void updateScore(int newScore);
+    virtual void updateLevel(int newLevel);
+
+private:
+    void  draw(int x, int y, int value){drawSquare(x,height - y,value);}
+    void  removeFullLines();
+    void  removeLine(int line);
+    void  showPiece();
+    void  erasePiece();
+    void  internalPieceDropped(int dropHeight);
+    void  gluePiece();
+    void  showNextPiece(int erase = 0);
+    void  eraseNextPiece(){showNextPiece(1);};
+    int   canPosition(TetrixPiece &piece);    // Returns a boolean value.
+    int   canMoveTo(int xPosition, int line); // Returns a boolean value.
+    void  moveTo(int xPosition,int line);
+    void  position(TetrixPiece &piece);
+    void  optimizedMove(int newPos, int newLine,TetrixPiece &newPiece);
+    
+    int  &board(int x,int y){return boardPtr[width*y + x];}
+
+    TetrixPiece currentPiece;
+    TetrixPiece nextPiece;
+    int         currentLine;
+    int         currentPos;
+    int         showNext;                    // Boolean variable.
+    int         nLinesRemoved;
+    int         nPiecesDropped;
+    int         score;
+    int         level;
+    int         gameID;
+    int         nClearLines;
+    int         width;
+    int         height;
+    int         *boardPtr;
+};
+
+
+#endif