Method HelpMessageDialog

src/qt/utilitydialog.cpp:27–111

"Help message" or "About" dialog box */

/** "Help message" or "About" dialog box */
HelpMessageDialog::HelpMessageDialog(QWidget *parent, bool about) :
    QDialog(parent),
    ui(new Ui::HelpMessageDialog)
{
    ui->setupUi(this);

    QString version = tr("Bitcoin XT") + " " + tr("version") + " " + QString::fromStdString(FormatFullVersion());
    /* On x86 add a bit specifier to the version so that users can distinguish between
     * 32 and 64 bit builds. On other architectures, 32/64 bit may be more ambigious.
     */
#if defined(__x86_64__)
    version += " " + tr("(%1-bit)").arg(64);
#elif defined(__i386__ )
    version += " " + tr("(%1-bit)").arg(32);
#endif

    if (about)
    {
        setWindowTitle(tr("About Bitcoin XT"));

        /// HTML-format the license message from the core
        QString licenseInfo = QString::fromStdString(LicenseInfo());
        QString licenseInfoHTML = licenseInfo;
        // Make URLs clickable
        QRegExp uri("<(.*)>", Qt::CaseSensitive, QRegExp::RegExp2);
        uri.setMinimal(true); // use non-greedy matching
        licenseInfoHTML.replace(uri, "<a href=\"\\1\">\\1</a>");
        // Replace newlines with HTML breaks
        licenseInfoHTML.replace("\n\n", "<br><br>");

        ui->aboutMessage->setTextFormat(Qt::RichText);
        ui->scrollArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);
        text = version + "\n" + licenseInfo;
        ui->aboutMessage->setText(version + "<br><br>" + licenseInfoHTML);
        ui->aboutMessage->setWordWrap(true);
        ui->helpMessage->setVisible(false);
    } else {
        setWindowTitle(tr("Command-line options"));
        QString header = tr("Usage:") + "\n" +
            "  bitcoin-qt [" + tr("command-line options") + "]                     " + "\n";
        QTextCursor cursor(ui->helpMessage->document());
        cursor.insertText(version);
        cursor.insertBlock();
        cursor.insertText(header);
        cursor.insertBlock();

        QString coreOptions = QString::fromStdString(HelpMessage(HMM_BITCOIN_QT));
        text = version + "\n" + header + "\n" + coreOptions;

        QTextTableFormat tf;
        tf.setBorderStyle(QTextFrameFormat::BorderStyle_None);
        tf.setCellPadding(2);
        QVector<QTextLength> widths;
        widths << QTextLength(QTextLength::PercentageLength, 35);
        widths << QTextLength(QTextLength::PercentageLength, 65);
        tf.setColumnWidthConstraints(widths);

        QTextCharFormat bold;