how can i detected the webcam is working?

[linchuanhai]

Hi,
public static Capture CamCapture;
public static Mat Frame;
private void Form1_Load(object sender, EventArgs e)
{
CvInvoke.UseOpenCL = false;
CamCapture = new Capture();
CamCapture.ImageGrabbed += CamCapture_ImageGrabbed;
CamCapture.Start();
}

private void CamCapture_ImageGrabbed(object sender, System.EventArgs e)
{
Frame = new Mat();
var value= CamCapture.Retrieve(Frame);
camImg.Image = Frame;
}
how can i detected the webcam is working?
I can not found any properties or method to judge that is working.
the CamCapture.Retrieve(Frame) always is return true when the webcam line is pulled out.

[fastlater]

@linchuanhai Why did you open an issue in emgucv and another in emguTf?

[emgucv]

Please post emgu cv issues on emgu cv issue tracker:
https://github.com/emgucv/emgucv/issues

Closing ticket now.