导出为PDF UI场景(QML)

import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15
import QtPrintSupport 1.0

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Export to PDF Example")

    Button {
        text: "Export to PDF"
        onClicked: {
            var printer = new Qt.Printer;
            if (printer.isValid()) {
                var pageRect = printer.pageRect(Qt.DevicePixel);
                var painter = Qt.createQmlObject('import QtQuick 2.15; import QtGraphicalEffects 1.15; Rectangle { width: ' + pageRect.width + '; height: ' + pageRect.height + '; color: "white"; }', parent);
                painter.children = [/* your UI components here */];
                painter.update();
                painter.render(painter, Qt.Painter.RenderHint.Antialiasing);
                printer.setOutputFileName("output.pdf");
                printer.newPage();
                painter.render(painter, Qt.Painter.RenderHint.Antialiasing);
                printer.end();
            }
        }
    }

    // Your UI components here
}