在我的小应用程序中,我想预览每个页面中的一些 HTML 内容,所以我使用了以下代码
/*
* Handle events when clicking button to preview content
*/
void MainWindow::on_pushButton_clicked()
{
QPrinter printer;
printer.setPaperSize(QPrinter::A4);
printer.setOrientation(QPrinter::Portrait);
printer.setFullPage(true);
QPrintPreviewDialog *printPreview = new QPrintPreviewDialog(&printer);
connect(printPreview, SIGNAL(paintRequested(QPrinter*)), this, SLOT(printAllTitle(QPrinter*)));
printPreview->setWindowTitle("Demo");
Qt::WindowFlags flags(Qt::WindowTitleHint);
printPreview->setWindowFlags(flags);
printPreview->showMaximized();
printPreview->exec();
}
/*
* Show preview content
*/
void MainWindow::printAllTitle(QPrinter *printer)
{
QVector<QString> titles;
titles.push_back("Title 1");
titles.push_back("Title 2");
QString strStream;
QTextStream out(&strStream);
for (int i = 0; i < titles.size(); i++) {
out << "<html><head></head><body>";
out << "<p style=\"font-size:20pt\">" + titles.at(i) + "</p>";
out << "</body></html>";
printer->newPage(); // Don't move the next page !!!
}
QTextDocument *document = new QTextDocument();
document->setHtml(strStream);
document->print(printer);
delete document;
}
我得到的结果页面
在多次测试结果页面后,我意识到打印机没有移动下一页来打印 HTML 内容。
我该如何解决这个问题?
谢谢!