QT 使用windows照相机
时间: 2023-05-30 13:07:52 浏览: 94
作为AI语言模型,我无法直接使用照相机,但我可以提供一些帮助和建议。
如果你想在QT应用程序中使用Windows照相机,可以使用Windows Media Foundation库。它可以访问摄像头,并捕获视频流。
以下是一个简单的示例代码:
```c++
#include <QMainWindow>
#include <QCamera>
#include <QCameraViewfinder>
#include <QCameraImageCapture>
#include <QVBoxLayout>
#include <QPushButton>
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr)
: QMainWindow(parent)
, m_camera(new QCamera(this))
, m_viewfinder(new QCameraViewfinder(this))
, m_imageCapture(new QCameraImageCapture(m_camera, this))
, m_layout(new QVBoxLayout)
, m_captureButton(new QPushButton(tr("Capture"), this))
{
m_layout->addWidget(m_viewfinder);
m_layout->addWidget(m_captureButton);
QWidget *widget = new QWidget(this);
widget->setLayout(m_layout);
setCentralWidget(widget);
m_camera->setViewfinder(m_viewfinder);
m_camera->start();
connect(m_captureButton, &QPushButton::clicked, this, &MainWindow::captureImage);
connect(m_imageCapture, &QCameraImageCapture::imageCaptured, this, &MainWindow::imageCaptured);
}
public slots:
void captureImage()
{
m_imageCapture->capture();
}
void imageCaptured(int id, const QImage &image)
{
// do something with the captured image
}
private:
QCamera *m_camera;
QCameraViewfinder *m_viewfinder;
QCameraImageCapture *m_imageCapture;
QVBoxLayout *m_layout;
QPushButton *m_captureButton;
};
```
注意:您需要在项目文件中添加以下行:
```c++
QT += multimedia multimediawidgets
```
这将使您能够使用QCamera和QCameraViewfinder。