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client.h Example File
network/fortuneclient/client.h

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 #ifndef CLIENT_H
 #define CLIENT_H

 #include <QDialog>
 #include <QTcpSocket>

 class QDialogButtonBox;
 class QLabel;
 class QLineEdit;
 class QPushButton;
 class QTcpSocket;

 class Client : public QDialog
 {
     Q_OBJECT

 public:
     Client(QWidget *parent = 0);

 private slots:
     void requestNewFortune();
     void readFortune();
     void displayError(QAbstractSocket::SocketError socketError);
     void enableGetFortuneButton();

 private:
     QLabel *hostLabel;
     QLabel *portLabel;
     QLineEdit *hostLineEdit;
     QLineEdit *portLineEdit;
     QLabel *statusLabel;
     QPushButton *getFortuneButton;
     QPushButton *quitButton;
     QDialogButtonBox *buttonBox;

     QTcpSocket *tcpSocket;
     QString currentFortune;
     quint16 blockSize;
 };

 #endif