Opening and Handling Devices: Open Device Using Dialog

The sample application's window looks as follows:

First of all the instance of the Grabber class is to be created as member of the dialog class.

DShowLib::Grabber        m_cGrabber; // The instance of the Grabber class.

The video capture device will be opened in the CDialog::OnInitDialog() method. With a call to Grabber::showDevicePage() IC Imaging Control's built-in video capture device selection dialog is shown.

If a video capture device has been opened successfully, i.e. it is valid, the image data stream is started by a call to Grabber::startLive(). The source code for this task is implemented as follows:

m_cGrabber.showDevicePage();

if( m_cGrabber.isDevValid())
        m_cGrabber.startLive();