//QML 代码占位符  
import QtQuick 2.9
import QtQuick.Controls 2.2
import QtQuick.Window 2.12
import QtMultimedia 5.12ApplicationWindow {
    visibility:Window.FullScreen                // Show FullScreen
    visible: true
    width:1920
    height: 1080
    flags: Qt.Window | Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint//隐藏标题栏    //图片输出元素
    VideoOutput {
        anchors.fill: parent
        source: camera.imageCapture
    }
        //摄像头元素
    Camera {
      id: camera
      captureMode: Camera.CaptureViewfinder
    
      
      onError: {
        console.log("Camera error:", error)
      }
     
   }}
 

//Creator 代码占位符

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QCameraInfo>
#include <QFileDialog>
#include <QDebug>
#include <QMessageBox>
#include <QProcess>
#include <QTimer>
#include <QMediaMetaData>MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    showFullScreen();//单纯使用这个也会在运行的时候隐藏一下状态栏,但是点一下鼠标就又出现了
    setMaximumSize(1280, 720);
    // 去掉标题栏,去掉任务栏显示，窗口置顶
    this->setWindowFlags(Qt::FramelessWindowHint | Qt::Tool | Qt::WindowStaysOnTopHint);    QList<QCameraInfo> cameras = QCameraInfo::availableCameras();
    if(cameras.count() > 0){
        camera = new QCamera(cameras.at(0));
    }
    viewfinder = new QCameraViewfinder(this);
    camera->setViewfinder(viewfinder);
    viewfinder->resize(600,600);
    imageCapture = new QCameraImageCapture(camera);
    camera->start();
}MainWindow::~MainWindow()
{
    delete ui; 
}