QTextCursor highlightCursor(document);
    QTextCursor cursor(document);

    cursor.beginEditBlock();

    QTextCharFormat plainFormat(highlightCursor.charFormat());
    QTextCharFormat colorFormat = plainFormat;

    colorFormat.setBackground(Qt::yellow);

    while (!highlightCursor.isNull() && !highlightCursor.atEnd())
    {
    //       p.setColor(QPalette::Base, QColor("#f8f8f8"));
    //XXX     if (searchTextList.contains())

        if (!highlightCursor.isNull())
        {
        count++;
        // QTextDocument::FindCaseSensitively, wholeword 는 QTextDocument::FindWholeWords임
        highlightCursor = document->find(strsearch,  highlightCursor, 0);
        highlightCursor.movePosition(QTextCursor::WordRight,  QTextCursor::KeepAnchor);
        highlightCursor.mergeCharFormat(colorFormat);
        isSearch = true;
        }
    }
    cursor.endEditBlock();

    if (isSearch)
        searchTextList.append(strsearch);