C#

public delegate void newimg_handler(object sender, newimage_args e);

public class camerathread
{
	public event newimg_handler newimg;

	bool quitthread;

	imageobject img;

	public camerathread()
	{
		img = new imageobject();
		quitthread = false;

		OpenImageDevice();

	}

	public void exithread()
	{
		quitthread = true;
	}

	public void run()
	{
		while (!quitthread)
		{
			try
			{
				GetImage(out img);
				if(newimg != null)
				{
					newimage_args nia = new newimage_args();
						nia.img = img;
						newimg(this, nia);
				}
			}
			catch
			{
			}
		}
	}

}

public class newimage_args : EventArgs
{
	public imageobject img;

	public newimage_args()
	{
	}
}

public Form1()
{
...
	ct = new camerathread();
	ct.newimg += new newimg_handler(ct_newimg);
	camerawork = new System.Threading.Thread(new System.Threading.ThreadStart(ct.run));
	camerawork.Priority = System.Threading.ThreadPriority.AboveNormal;
	camerawork.Start();
...
}

void ct_newimg(object sender, newimage_args e)
{
	img = e.img;
	display(img);
}