QT编写RTF格式文件实例

#include "widget.h" #include "ui_widget.h" #include <QFileDialog> #include <QtXml/QDomDocument> #include <QTextStream> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); } Widget::~Widget() { delete ui; } void Widget::on_toolButton_clicked() { QString fileName = QFileDialog::getSaveFileName(this, tr("Save File"), QString(), tr("Rich Text Files (*.rtf);;")); if (fileName.isEmpty()) return; if (!fileName.endsWith(QLatin1String(".rtf"))) fileName += QLatin1String(".rtf"); QFile file(fileName); if (!file.open(QIODevice::ReadWrite | QIODevice::Text)) { return; } QDomDocument doc; doc.setContent(&file); QDomElement root = doc.documentElement(); QDomElement body; if (!root.isNull()) { body = root.firstChildElement(QLatin1String("body")); } if (body.isNull()) { root = doc.createElement(QLatin1String("html")); QDomElement head = doc.createElement(QLatin1String("head")); QDomElement meta = doc.createElement(QLatin1String("meta")); meta.setAttribute(QLatin1String("http-equiv"), QLatin1String("Content-Type")); meta.setAttribute(QLatin1String("content"), QLatin1String("text/html; charset=utf-8")); head.appendChild(meta); root.appendChild(head); body = doc.createElement(QLatin1String("body")); root.appendChild(body); doc.appendChild(root); } if (body.isNull()) return; QDomElement subtitleParagraph = doc.createElement(QLatin1String("p")); QDomText subtitleText = doc.createTextNode(tr("Subtitle:")+QLatin1String("this is a test")); subtitleParagraph.appendChild(subtitleText); QDomElement tempLabel = doc.createElement(QLatin1String("span")); tempLabel.setAttribute(QLatin1String("style"), QLatin1String("color:red")); QDomText tempNode = doc.createTextNode(QLatin1String(" this is red")); tempLabel.appendChild(tempNode); subtitleParagraph.appendChild(tempLabel); body.appendChild(subtitleParagraph); QTextStream out(&file); doc.save(out, 4); file.close(); }