QT5 Qt5摄像头截图保存

#include "mainwindow.h" #include "ui_mainwindow.h" #include <QWidget> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); view_finder = new QCameraViewfinder(parent); camera = new QCamera(parent); camera->setViewfinder(view_finder); ui->camera_layout->addWidget(view_finder); camera_image_capture = new QCameraImageCapture(camera,parent); //connect(camera_image_capture,SIGNAL(camera_image_capture->imageCaptured(int,QImage)),this,SLOTE(displayImage(int,QImage))); connect(camera_image_capture,SIGNAL(imageCaptured(int,QImage)),this,SLOT(displayImage(int,QImage))); } MainWindow::~MainWindow() { delete ui; } void MainWindow::on_pushButton_clicked() { camera->start(); } void MainWindow::displayImage(int id, const QImage image) { ui->show_img_lab->setPixmap(QPixmap::fromImage(image)); } void MainWindow::on_pushButton_5_clicked() { camera->stop(); } void MainWindow::on_pushButton_9_clicked() { camera_image_capture->capture(); } void MainWindow::on_pushButton_2_clicked() { const QPixmap *pixmap= ui->show_img_lab->pixmap(); pixmap->save("F://1.jpg"); }