/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
Disconnect();
// If it is m_client?.Dispose(), it will be a CA2213 warning.
if (m_client != null)
{
m_client.Dispose();
}
if (m_readTask != null)
{
m_readTask.Dispose();
}
if (m_cancelTokenSource != null)
{
m_cancelTokenSource.Dispose();
}
if (m_image != null)
{
m_image.Dispose();
}
}
base.Dispose(disposing);
}
public bool Connect(VncConfig a_config)
{
// Connect Vnc
m_client?.Dispose();
m_client = new VncClient(a_config);
m_client.DisconnectedEvent += (s, e) =>
{
if (InvokeRequired)
{
Invoke((MethodInvoker) delegate
{
DisconnectedEvent?.Invoke(s, e);
});
}
else
{
DisconnectedEvent?.Invoke(s, e);
}
};
bool retVal = m_client.ConnectVnc();
if (!retVal)
{
m_client.Dispose();
m_client = null;
return(false);
}
// Draw the whole for the first time.
m_needsRedraw = true;
// Initialize zoom ratio for mouseEvent.
m_xZoom = new Fraction(this.Width, m_client.ServerInitBody.FramebufferWidth, 10);
m_yZoom = new Fraction(this.Height, m_client.ServerInitBody.FramebufferHeight, 10);
// Create new image to draw OpenCv Mat.
m_image?.Dispose();
m_image = new Bitmap(m_client.ServerInitBody.FramebufferWidth, m_client.ServerInitBody.FramebufferHeight, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
// Create read thread
m_cancelTokenSource?.Dispose();
m_cancelTokenSource = new CancellationTokenSource();
var token = m_cancelTokenSource.Token;
m_readTask?.Dispose();
m_readTask = Task.Factory.StartNew(() =>
{
while (true)
{
if (m_client != null && m_client.Connected)
{
// If Read is failed, it returns null.
var body = m_client.ReadServerMessage();
if (body == null)
{
// Disconnect
m_client?.DisconnectVnc();
// Execute to draw this control black.
// Without this, the screen will not be updated and the VNC image will remain.
NativeMethods.InvalidateRect(m_handle, (IntPtr)0, false);
return;
}
if (body.MessageType == VncEnum.MessageTypeServerToClient.FramebufferUpdate)
{
NativeMethods.InvalidateRect(m_handle, (IntPtr)0, false);
lock (m_client.CanvasLock)
{
m_encodeList.Add(body.EncodeList);
}
}
if (token.IsCancellationRequested)
{
return;
}
}
}
}, m_cancelTokenSource.Token);
return(retVal);
}
