#include <qmessagebox.h>#include <qsessionmanager.h>#include "application.h"#include "tictactoe.h"Application::Application(int &argc, char *argv[])    : QApplication(argc, argv){    ticTacToe = 0;}void Application::setTicTacToe(TicTacToe *tic){    ticTacToe = tic;    setMainWidget(tic);}void Application::saveState(QSessionManager &sessionManager){    QString fileName = ticTacToe->saveState();    QStringList discardCommand;    discardCommand << "rm" << fileName;    sessionManager.setDiscardCommand(discardCommand);}void Application::commitData(QSessionManager &sessionManager){    if (ticTacToe->gameInProgress()            && sessionManager.allowsInteraction()) {        int ret = QMessageBox::warning(ticTacToe, tr("Tic-Tac-Toe"),                     tr("The game hasn't finished.\n"                        "Do you really want to quit?"),                     QMessageBox::Yes | QMessageBox::Default,                     QMessageBox::No | QMessageBox::Escape);        if (ret == QMessageBox::Yes)            sessionManager.release();        else            sessionManager.cancel();    }}