mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <qpushbutton.h>
#include <qlabel.h>
#include <qlineedit.h>
#include <qmediaplayer.h>
#include <qaudiooutput.h>
#include <qurl.h>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    //Label
    ui->setupUi(this);
    QLabel *Label = new QLabel("input open File:",this);
    Label -> move(10,10);

    //input
    QLineEdit *Edit = new QLineEdit(this);
    Edit -> move(115,10);

    //Button show
    QPushButton *Button = new QPushButton("OK",this);
    Button -> move(340,500);

    connect(Button,&QPushButton::clicked,this,[=](){
        QMediaPlayer *player = new QMediaPlayer;
        player->setAudioOutput(new QAudioOutput);
        player->setSource(QUrl::fromLocalFile(Edit->text()));
        player->play();





    });
}

MainWindow::~MainWindow()
{
    delete ui;
}