C++ QTextEdit::setWindowTitle方法代码示例

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTextEdit *editor = new QTextEdit;

//! [0]
    QTextDocument *document = editor->document();
    QTextCursor redCursor(document);
//! [0] //! [1]
    QTextCursor blueCursor(document);
//! [1]

    QTextCharFormat redFormat(redCursor.charFormat());
    redFormat.setForeground(Qt::red);
    QTextCharFormat blueFormat(blueCursor.charFormat());
    blueFormat.setForeground(Qt::blue);

    redCursor.setCharFormat(redFormat);
    blueCursor.setCharFormat(blueFormat);

    for (int i = 0; i < 20; ++i) {
        if (i % 2 == 0)
            redCursor.insertText(tr("%1 ").arg(i), redFormat);
        if (i % 5 == 0)
            blueCursor.insertText(tr("%1 ").arg(i), blueFormat);
    }

    editor->setWindowTitle(tr("Text Document Cursors"));
    editor->resize(320, 480);
    editor->show();
    return app.exec();
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTextEdit *editor = new QTextEdit;

//! [0]
    QTextDocument *document = new QTextDocument(editor);
    QTextCursor cursor(document);
//! [0]

//! [1]
    QTextImageFormat imageFormat;
    imageFormat.setName(":/images/advert.png");
    cursor.insertImage(imageFormat);
//! [1]

    cursor.insertBlock();
    cursor.insertText("Code less. Create more.");

    editor->setDocument(document);
    editor->setWindowTitle(tr("Text Document Images"));
    editor->resize(320, 480);
    editor->show();
    return app.exec();
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTextEdit *editor = new QTextEdit;

    QTextDocument *document = new QTextDocument(editor);
    QTextCursor cursor(document);

    QTextImageFormat imageFormat;
    imageFormat.setName(":/images/advert.png");
    cursor.insertImage(imageFormat);

    QTextBlock block = cursor.block();
    QTextFragment fragment;
    QTextBlock::iterator it;

    for (it = block.begin(); !(it.atEnd()); ++it) {
        fragment = it.fragment();

        if (fragment.contains(cursor.position()))
            break;
    }

//! [0]
    if (fragment.isValid()) {
        QTextImageFormat newImageFormat = fragment.charFormat().toImageFormat();

        if (newImageFormat.isValid()) {
            newImageFormat.setName(":/images/newimage.png");
            QTextCursor helper = cursor;

            helper.setPosition(fragment.position());
            helper.setPosition(fragment.position() + fragment.length(),
                               QTextCursor::KeepAnchor);
            helper.setCharFormat(newImageFormat);
//! [0] //! [1]
        }
//! [1] //! [2]
    }
//! [2]

    cursor.insertBlock();
    cursor.insertText("Code less. Create more.");

    editor->setDocument(document);
    editor->setWindowTitle(tr("Text Document Image Format"));
    editor->resize(320, 480);
    editor->show();

    return app.exec();
}

QTextEdit* Widgets::createMdiChild()
{
    static int sequenceNumber = 1;

    QString curFile = tr("document%1.txt").arg(sequenceNumber++);

    QTextEdit* child = new QTextEdit;
    child->setWindowIcon(QIcon(":/res/new.png"));
    child->setWindowTitle(curFile + "[*]");

    QMdiSubWindow* subWindow = m_mdiArea->addSubWindow(child);
    subWindow->setWindowState(Qt::WindowMaximized);
//    subWindow->resize( m_mdiArea->width(), m_mdiArea->height());
    child->show();
    return child;
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTextEdit *editor = new QTextEdit();

    QTextCursor cursor(editor->textCursor());
    cursor.movePosition(QTextCursor::Start); 

    QTextCharFormat plainFormat(cursor.charFormat());

    QTextCharFormat headingFormat = plainFormat;
    headingFormat.setFontWeight(QFont::Bold);
    headingFormat.setFontPointSize(16);

    QTextCharFormat emphasisFormat = plainFormat;
    emphasisFormat.setFontItalic(true);

    QTextCharFormat qtFormat = plainFormat;
    qtFormat.setForeground(QColor("#990000"));

    QTextCharFormat underlineFormat = plainFormat;
    underlineFormat.setFontUnderline(true);

//! [0]
    cursor.insertText(tr("Character formats"),
                      headingFormat);

    cursor.insertBlock();

    cursor.insertText(tr("Text can be displayed in a variety of "
                                  "different character formats. "), plainFormat);
    cursor.insertText(tr("We can emphasize text by "));
    cursor.insertText(tr("making it italic"), emphasisFormat);
//! [0]
    cursor.insertText(tr(", give it a "), plainFormat);
    cursor.insertText(tr("different color "), qtFormat);
    cursor.insertText(tr("to the default text color, "), plainFormat);
    cursor.insertText(tr("underline it"), underlineFormat);
    cursor.insertText(tr(", and use many other effects."), plainFormat);

    editor->setWindowTitle(tr("Text Document Character Formats"));
    editor->resize(320, 480);
    editor->show();
    return app.exec();
}

void MainDock::help() {
//pd Qt version dependent
#if QT_VERSION >= 0x040200
	QDesktopServices::openUrl(QUrl("Readme.txt"));
#else
	QFile readmeFile("Readme.txt");
	readmeFile.open(QIODevice::ReadOnly);
	QTextStream readmeStream(&readmeFile);
	QString readmeString = readmeStream.readAll();
	//won't close automaticaly
	QTextEdit* readmeTXE = new QTextEdit(0);
	readmeTXE->setMinimumSize(500, 300);
	readmeTXE->setWindowTitle("Parallel Worlds Help");
	readmeTXE->show();
	readmeTXE->setReadOnly(true);
	readmeTXE->setPlainText(readmeString);
#endif
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    QTextEdit *editor = new QTextEdit();

    QTextCursor cursor(editor->textCursor());
    cursor.movePosition(QTextCursor::Start);

    QTextCharFormat plainFormat(cursor.charFormat());
    QTextCharFormat colorFormat = plainFormat;
    colorFormat.setForeground(Qt::red);

    cursor.insertText(tr("Text can be displayed in a variety of "
                                  "different character "
                                  "formats. "), plainFormat);
    cursor.insertText(tr("We can emphasize text by making it "));
    cursor.insertText(tr("italic, give it a different color "));
    cursor.insertText(tr("to the default text color, underline it, "));
    cursor.insertText(tr("and use many other effects."));

    QString searchString = tr("text");

    QTextDocument *document = editor->document();
//! [0]
    QTextCursor newCursor(document);

    while (!newCursor.isNull() && !newCursor.atEnd()) {
        newCursor = document->find(searchString, newCursor);

        if (!newCursor.isNull()) {
            newCursor.movePosition(QTextCursor::WordRight,
                                   QTextCursor::KeepAnchor);

            newCursor.mergeCharFormat(colorFormat);
        }
//! [0] //! [1]
    }
//! [1]

    editor->setWindowTitle(tr("Text Document Find"));
    editor->resize(320, 480);
    editor->show();
    return app.exec();
}

void ComputationalResultsTableView::showLogFile()
{
  MongoDatabase *db = MongoDatabase::instance();
  mongo::GridFS fs(*db->connection(), "chem", "fs");

  mongo::BSONObj *obj =
    static_cast<mongo::BSONObj *>(currentIndex().internalPointer());
  if (obj) {
    const char *file_name = obj->getStringField("log_file");

    mongo::GridFile file = fs.findFile(file_name);

    if (!file.exists()) {
      QMessageBox::critical(this,
                            "Error",
                            "Failed to load output file.");
      return;
    }

    // load file into a buffer
    std::stringstream stream;
    file.write(stream);

    QTextEdit *viewer = new QTextEdit(this);
    viewer->resize(500, 600);
    viewer->setWindowFlags(Qt::Dialog);
    viewer->setWindowTitle(file_name);
    viewer->setReadOnly(true);
    std::string file_data_string = stream.str();
    viewer->setText(file_data_string.c_str());
    viewer->show();
  }
  else {
    QMessageBox::critical(this,
                          "Error",
                          "Failed to load output file.");
  }
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

//! [0]
    QTextEdit *editor = new QTextEdit();
    QTextCursor cursor(editor->textCursor());
//! [0]
    cursor.movePosition(QTextCursor::Start);

    QTextBlockFormat blockFormat = cursor.blockFormat();
    blockFormat.setTopMargin(4);
    blockFormat.setLeftMargin(4);
    blockFormat.setRightMargin(4);
    blockFormat.setBottomMargin(4);

    cursor.setBlockFormat(blockFormat);
    cursor.insertText(tr("This contains plain text inside a "
                         "text block with margins to keep it separate "
                         "from other parts of the document."));

    cursor.insertBlock();

//! [1]
    QTextBlockFormat backgroundFormat = blockFormat;
    backgroundFormat.setBackground(QColor("lightGray"));

    cursor.setBlockFormat(backgroundFormat);
//! [1]
    cursor.insertText(tr("The background color of a text block can be "
                         "changed to highlight text."));

    cursor.insertBlock();

    QTextBlockFormat rightAlignedFormat = blockFormat;
    rightAlignedFormat.setAlignment(Qt::AlignRight);

    cursor.setBlockFormat(rightAlignedFormat);
    cursor.insertText(tr("The alignment of the text within a block is "
                         "controlled by the alignment properties of "
                         "the block itself. This text block is "
                         "right-aligned."));

    cursor.insertBlock();

    QTextBlockFormat paragraphFormat = blockFormat;
    paragraphFormat.setAlignment(Qt::AlignJustify);
    paragraphFormat.setTextIndent(32);

    cursor.setBlockFormat(paragraphFormat);
    cursor.insertText(tr("Text can be formatted so that the first "
                         "line in a paragraph has its own margin. "
                         "This makes the text more readable."));

    cursor.insertBlock();

    QTextBlockFormat reverseFormat = blockFormat;
    reverseFormat.setAlignment(Qt::AlignJustify);
    reverseFormat.setTextIndent(32);

    cursor.setBlockFormat(reverseFormat);
    cursor.insertText(tr("The direction of the text can be reversed. "
                         "This is useful for right-to-left "
                         "languages."));

    editor->setWindowTitle(tr("Text Block Formats"));
    editor->resize(480, 480);
    editor->show();

    return app.exec();
}