tetrixwindow.h Example File
widgets/tetrix/tetrixwindow.h

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 #ifndef TETRIXWINDOW_H
 #define TETRIXWINDOW_H

 #include <QFrame>
 #include <QWidget>

 class QLCDNumber;
 class QLabel;
 class QPushButton;

 class TetrixBoard;

 class TetrixWindow : public QWidget
 {
     Q_OBJECT

 public:
     TetrixWindow();

 private:
     QLabel *createLabel(const QString &text);

     TetrixBoard *board;
     QLabel *nextPieceLabel;
     QLCDNumber *scoreLcd;
     QLCDNumber *levelLcd;
     QLCDNumber *linesLcd;
     QPushButton *startButton;
     QPushButton *quitButton;
     QPushButton *pauseButton;
 };

 #endif