#ifndef SPREADSHEET_H#define SPREADSHEET_H#include <qstringlist.h>#include <qtable.h>class Cell;class SpreadsheetCompare;class Spreadsheet : public QTable{    Q_OBJECTpublic:    Spreadsheet(QWidget *parent = 0, const char *name = 0);    void clear();    QString currentLocation() const;    QString currentFormula() const;    bool autoRecalculate() const { return autoRecalc; }    bool readFile(const QString &fileName);    bool writeFile(const QString &fileName);    QTableSelection selection();    void sort(const SpreadsheetCompare &compare);public slots:    void cut();    void copy();    void paste();    void del();    void selectRow();    void selectColumn();    void selectAll();    void recalculate();    void setAutoRecalculate(bool on);    void findNext(const QString &str, bool caseSensitive);    void findPrev(const QString &str, bool caseSensitive);signals:    void modified();protected:    QWidget *createEditor(int row, int col, bool initFromCell) const;    void endEdit(int row, int col, bool accepted, bool wasReplacing);private:    enum { MagicNumber = 0x7F51C882, NumRows = 999, NumCols = 26 };    Cell *cell(int row, int col) const;    void setFormula(int row, int col, const QString &formula);    QString formula(int row, int col) const;    void somethingChanged();    bool autoRecalc;};class SpreadsheetCompare{public:    bool operator()(const QStringList &row1,                    const QStringList &row2) const;    enum { NumKeys = 3 };    int keys[NumKeys];    bool ascending[NumKeys];};#endif