window.h Example File

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 #ifndef WINDOW_H
 #define WINDOW_H

 #include <QWidget>

 class QComboBox;
 class QDataWidgetMapper;
 class QItemSelectionModel;
 class QLabel;
 class QLineEdit;
 class QPushButton;
 class QSqlRelationalTableModel;
 class QStandardItemModel;
 class QStringListModel;
 class QTextEdit;

 class Window : public QWidget
 {
     Q_OBJECT

 public:
     Window(QWidget *parent = 0);

 private slots:
     void updateButtons(int row);

 private:
     void setupModel();

     QLabel *nameLabel;
     QLabel *addressLabel;
     QLabel *typeLabel;
     QLineEdit *nameEdit;
     QTextEdit *addressEdit;
     QComboBox *typeComboBox;
     QPushButton *nextButton;
     QPushButton *previousButton;

     QSqlRelationalTableModel *model;
     QItemSelectionModel *selectionModel;
     QDataWidgetMapper *mapper;
     int typeIndex;
 };

 #endif