qt5.12.1 桌面应用的中显示qml文件无法使用内置风格的解决办法

一句话,main.cpp添加

QQuickStyle::setStyle("Material");//桌面程序中引用qml文件无法加载默认的效果,需要用此

完整代码

#include "mainwindow.h"

#include <QApplication>

#include <QLabel>

#include <QLineEdit>

#include <QPushButton>

#include <QQmlApplicationEngine>

#include <QWindow>

#include <QQmlEngine>

#include <QDebug>

#include"shujuku.h"

//#include"tablemodel.h"

#include <QQmlProperty>

#include <QQmlComponent>

#include <QApplication>

#include <QQmlContext>

#include <QVariant>

#include <QSqlTableModel>

#include<QMap>

#include <QWindow>

#include <QPushButton>

#include <QQuickStyle>

//class ClassMate;

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

 QQuickStyle::setStyle("Material");//桌面程序中引用qml文件无法加载默认的效果,需要用此

    //注册C++的Dialog类,到qml文件中可以使用Dialog0模块

    qmlRegisterType<Shujuku>("Shujuku.module",1,0,"Shujuku");

    QQmlApplicationEngine engine;

    engine.load(QUrl(QStringLiteral("qrc:/new/prefix1/main.qml")));

    if (engine.rootObjects().isEmpty())

        return -1;

    MainWindow w;

    w.show();

   // QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

   // QQmlApplicationEngine engine;   // Tablemodel *model = new Tablemodel();

  //engine.rootContext()->setContextProperty("datamodel1" ,(model));

  // engine.load(QUrl(QStringLiteral("qrc:/main.qml")));

//    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

  //  QGuiApplication app(argc, argv);

  //  return app.exec();

    return a.exec();

}