mainwindow.h Example File

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  #ifndef MAINWINDOW_H
  #define MAINWINDOW_H

  #include <QDomDocument>
  #include <QMainWindow>
  #include <QModelIndex>

  class QComboBox;
  class QFile;
  class QGroupBox;
  class QLabel;
  class QListWidget;
  class QSqlRelationalTableModel;
  class QTableView;

  class MainWindow : public QMainWindow
  {
      Q_OBJECT

  public:
      MainWindow(const QString &artistTable, const QString &albumTable,
                 QFile *albumDetails, QWidget *parent = 0);

  private slots:
      void about();
      void addAlbum();
      void changeArtist(int row);
      void deleteAlbum();
      void showAlbumDetails(QModelIndex index);
      void showArtistProfile(QModelIndex index);
      void updateHeader(QModelIndex, int, int);

  private:
      void adjustHeader();
      QGroupBox *createAlbumGroupBox();
      QGroupBox *createArtistGroupBox();
      QGroupBox *createDetailsGroupBox();
      void createMenuBar();
      void decreaseAlbumCount(QModelIndex artistIndex);
      void getTrackList(QDomNode album);
      QModelIndex indexOfArtist(const QString &artist);
      void readAlbumData();
      void removeAlbumFromDatabase(QModelIndex album);
      void removeAlbumFromFile(int id);
      void showImageLabel();

      QTableView *albumView;
      QComboBox *artistView;
      QListWidget *trackList;

      QLabel *iconLabel;
      QLabel *imageLabel;
      QLabel *profileLabel;
      QLabel *titleLabel;

      QDomDocument albumData;
      QFile *file;
      QSqlRelationalTableModel *model;
  };

  #endif