C＃WPF uEye相机捕获视频

Question

I have program to capture video from camera. Application is in windows form and I want use this code to WPF application but it is not working. I use handle to capture image from uEye camera. In windows form is it

displayHandle = PictureBox.Handle

But when I use handle in WPF then I not received video from camera. In WPF i use this handle

HwndSource hwndSource = HwndSource.FromVisual(pbMainImage) as HwndSource;
displayHandle = hwndSource.Handle;

But still not working it

Both handle I used after

InitializeComponent();

---

private void onFrameEvent(object sender, EventArgs e){
  uEye.Camera Camera = sender as uEye.Camera;

  Int32 s32MemID;
  Camera.Memory.GetActive(out s32MemID);
  Camera.Display.Render(s32MemID, displayHandle, uEye.Defines.DisplayRenderMode.FitToWindow);
}

displayHandle si handle from component pictureImage.

Thanks for help.

Answer 1

 HwndSource hwndSource = HwndSource.FromVisual(pbMainImage) as HwndSource;
displayHandle = hwndSource.Handle;

Do not use after

InitializeComponent();

because hwndSource is null then Camera not recognize handle. You can create handle before use handle not after initialize component.

Answer 2

Straming IDS camera to WPF component.

private void onFrameEvent(object sender, EventArgs e)
{
      uEye.Camera Camera = sender as uEye.Camera;

      Int32 s32MemID;
      Camera.Memory.GetActive(out s32MemID);
      if (frameCamera != null)
            frameCamera.Dispose();
      frameCamera = null;
      Camera.Memory.ToBitmap(s32MemID, out frameCamera);

      Dispatcher.Invoke(new Action(() =>
      {
            pbMainImage.Source = loadBitmap(frameCamera);
      }));
}

loadBitmap(frameCamera) - Convert Bitmap to BitmapSource