- #include "mainwindow.h"
- #include "ui_mainwindow.h"
-
-
- MainWindow::MainWindow(QWidget *parent)
- : QMainWindow(parent)
- , ui(new Ui::MainWindow)
- {
- ui->setupUi(this);
-
- camera=new QCamera("@device:pnp:\?\usb#vid_0edc&pid_2076&mi_00#6&3455a94a&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global",this);
- viewfinder=new QCameraViewfinder(this);
- imageCapture=new QCameraImageCapture(camera);
- ui->horizontalLayout_View->addWidget(viewfinder);
- ui->label_Display->setScaledContents(true);
- camera->setViewfinder(viewfinder);
- camera->start();
- connect(imageCapture, SIGNAL(imageCaptured(int,QImage)), this, SLOT(displayImage(int,QImage)));
- connect(ui->pushButton_Capture, SIGNAL(clicked()), this, SLOT(captureImage())); //**
- connect(ui->pushButton_Save, SIGNAL(clicked()), this, SLOT(saveImage())); //***
- connect(ui->pushButton_Quit, SIGNAL(clicked()), qApp, SLOT(quit())); //***
-
- }
-
- MainWindow::~MainWindow()
- {
- delete ui;
- }
-
- void MainWindow::captureImage()
- {
- ui->statusbar->showMessage(tr("正在捕获图片"), 1000);
- imageCapture->capture();
- }
-
- void MainWindow::displayImage(int , QImage image)
- {
- ui->label_Display->setPixmap(QPixmap::fromImage(image));
- ui->statusbar->showMessage(tr("捕获成功"), 5000);
- }
-
- void MainWindow::saveImage()
- {
- QString fileName=QFileDialog::getSaveFileName(this, tr("保存到文件"), QDir::homePath(), tr("jpeg格式文件(.jpg)"));
- if(fileName.isEmpty()) {
- ui->statusbar->showMessage(tr("保存操作已取消"), 5000);
- return;
- }
- const QPixmap* pixmap=ui->label_Display->pixmap();
- if(pixmap) {
- pixmap->save(fileName);
- ui->statusbar->showMessage(tr("保存成功"), 5000);
- }
- }
复制代码
就是摄像头没加载出来
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