Qt批量打印图片

Qt 调用打印机批量打印图片&＃xff0c;输出为pdf;

void showPrintDialog(const QStringList &paths) {QPrinter printer;printer.setOutputFormat(QPrinter::PdfFormat);QPixmap img;QPrintDialog* printDialog &＃61; new QPrintDialog(&printer, this);printDialog->resize(400, 300);m_printDialogVisible &＃61; true;if (printDialog->exec() &＃61;&＃61; QDialog::Accepted) {QPainter painter(&printer);QList::const_iterator i;for(i &＃61; paths.begin(); i!&＃61; paths.end(); &＃43;&＃43;i){if (!img.load(*i)) {qDebug() <<"img load failed" <<*i;continue;}if (img.width() > img.height())printer.setPageOrientation(QPageLayout::Landscape);elseprinter.setPageOrientation(QPageLayout::Portrait);QRect pageOriginRect &＃61; printer.pageRect();QSize pageRect &＃61; QSize(pageOriginRect.width() - 8,pageOriginRect.height() - 8);img &＃61; img.scaled(pageRect, Qt::KeepAspectRatio, Qt::SmoothTransformation);painter.drawPixmap(0, 0, img);if (i !&＃61; paths.end() - 1)printer.newPage();}painter.end();qDebug() <<"print succeed!";return;}QObject::connect(printDialog, &QPrintDialog::finished, this, [&＃61;]{printDialog->deleteLater();m_printDialogVisible &＃61; false;});qDebug() <<"print failed!";
}