How to show Camera in WPF Application

It is exactly the same code, except for the main window handle (WindowInteropHelper in WPF) :

        public MainWindow()  
        {  
            InitializeComponent();  
            this.SourceInitialized += MainWindow_SourceInitialized;  
        }  
  
        private void MainWindow_SourceInitialized(object sender, EventArgs e)  
        {  
            hWnd = new System.Windows.Interop.WindowInteropHelper(this).Handle;  
  
            m_hWndContainer = CreateWindowEx(WS_EX_LAYERED, "Static", "", WS_VISIBLE | WS_CHILD, nXCaptureWindow, nYCaptureWindow, nWidthCaptureWindow, nHeightCaptureWindow, hWnd, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);  
            SetOpacity(m_hWndContainer, 100);  
  
            HRESULT hr = CaptureVideo();  
            // etc...  
        }