How to capture a PC like TeamViewer?

Question

Hi,

I have a windows forms application which captures keystrokes/screen shots and save them in a folder. But I wonder if there is a way to take control of this PC like team viewer (monitoring the desktop etc.) ? Would you please guide me?

Best Regards.

Nattudurai Eswaramurthy · Answer

We have some thrid party controls. Instead we could write it on our own. for ex : Create a Movie Maker Class: public delegate void RenderFrameDelegate(int frame, AutoResetEvent doneWaitHandle); public delegate void CaptureCompleteDelegate(MovieMaker mm); public class MovieMaker { private int _totalFrames; private Control _captureControl; private RenderFrameDelegate _renderMethod; private CaptureCompleteDelegate _captureComplete; private AutoResetEvent _waitHandle = new AutoResetEvent(false); private bool CaptureSameFrameTwice; //private string _imagePath = @"C:\Video Capture Test"; //private DateTime _fileName; //public MovieMaker(Control captureControl, int totalFrames, RenderFrameDelegate renderMethod, CaptureCompleteDelegate captureComplete, DateTime filename) public MovieMaker(Control captureControl, int totalFrames, RenderFrameDelegate renderMethod, CaptureCompleteDelegate captureComplete, bool shallCaptureTwice) { _captureControl = captureControl; _totalFrames = totalFrames; _renderMethod = renderMethod; _captureComplete = captureComplete; //_fileName = filename; Frames = new List (); CaptureSameFrameTwice = shallCaptureTwice; } public void Start() { IsCapturing = true; IsComplete = false; ThreadPool.QueueUserWorkItem(RunOnBackgroundThread); } private void RunOnBackgroundThread(object state) { int i = 0; int captureCount; int capturedCount = 0; bool firstFrame = true; if (CaptureSameFrameTwice) { captureCount = 2; } else { captureCount = 1; } while (i { // Call delegate to render the control _captureControl.Invoke((ThreadStart)delegate { _renderMethod(i, _waitHandle); }); // Wait to finish _waitHandle.WaitOne(); // Capture image _captureControl.Invoke((ThreadStart)delegate { Application.DoEvents(); using (Image img = new Bitmap(_captureControl.Width, _captureControl.Height)) using (MemoryStream stream = new MemoryStream()) { Graphics g = Graphics.FromImage(img); Point pt = _captureControl.PointToScreen(new Point(0, 0)); g.CopyFromScreen(pt, new Point(0, 0), _captureControl.ClientSize); img.Save(stream, ImageFormat.Jpeg); // img.Save(_imagePath + "\" + _fileName.ToString("yyyyMMddhhmmss") +i.ToString()+".jpg",ImageFormat.Jpeg); Frames.Add(stream.ToArray()); } }); capturedCount += 1; if (capturedCount == captureCount) { capturedCount = 0; i++; } if (captureCount == 1 && firstFrame == true) { i--; firstFrame = false; } } // Raise complete event _captureControl.Invoke((ThreadStart)delegate { IsCapturing = false; IsComplete = true; _captureComplete(this); }); } public List Frames { get; set; } public bool IsCapturing { get; private set; } public bool IsComplete { get; private set; } and then in ur form where want to capture use the below lines: MovieMaker mc = new MovieMaker(this, videoFrameCount, RenderFrame, CaptureComplete, ShallCaptureTwice); mc.Start(); private void RenderFrame(int frame, AutoResetEvent waitHandle) { if (frame { if (frame == videoFrameCount - 1) DisableProgressBar(); waitHandle.Set(); } } private void CaptureComplete(MovieMaker mm) { // Save the data where want to save }

How to capture a PC like TeamViewer?

Answers (1)