C#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Data;

namespace uEyeActiveXDemo_CS
{
    /// <summary>
    /// Zusammenfassung für Form1.
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button Init;
        private System.Windows.Forms.Button Snap;
        private System.Windows.Forms.Button Save;
        private System.Windows.Forms.Button Properties;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.RadioButton TriggerSoftware;
        private System.Windows.Forms.RadioButton TriggerFalling;
        private System.Windows.Forms.RadioButton TriggerRising;
        private System.Windows.Forms.TextBox Info1;
        private System.Windows.Forms.TextBox Info2;
        private System.Windows.Forms.TextBox Info3;
        private System.Windows.Forms.ListBox InfoList;
        private bool m_bCameraOpen;
        private bool m_bLive;
        private Int64 m_MemAddr;
        private byte[] rgb;
        private bool m_bContinuousTriggerSupported;
        private int m_nCurrentMode;
        private int m_nTransferFailed;
        private int m_nTransferFailedOld;
        private Timer t1;

        private System.Drawing.Point LastPoint;
        private System.Windows.Forms.RadioButton TriggerOff;
        private System.Windows.Forms.Button CaptureImage;
        private System.Windows.Forms.CheckBox Direct3D;
        private AxuEyeCamLib.AxuEyeCam axuEyeCam;

        /// <summary>
        /// Erforderliche Designervariable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            // Erforderlich für die Windows Form-Designerunterstützung
            //
            InitializeComponent();
            m_bCameraOpen = false;
            rgb = new byte[3];
            m_MemAddr = 0;
            LastPoint = new System.Drawing.Point(0, 0);
            m_nCurrentMode = 0;
            m_nTransferFailed = 0;
            m_nTransferFailedOld = 0;

            t1 = new Timer();
            t1.Interval = 100;
            t1.Tick += new EventHandler(t1_Tick);
            t1.Start();
        }

        /// <summary>
        /// Die verwendeten Ressourcen bereinigen.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null) 
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        #region Vom Windows Form-Designer generierter Code
        /// <summary>
        /// Erforderliche Methode für die Designerunterstützung. 
        /// Der Inhalt der Methode darf nicht mit dem Code-Editor geändert werden.
        /// </summary>
        private void InitializeComponent()
        {
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
            this.Init = new System.Windows.Forms.Button();
            this.Snap = new System.Windows.Forms.Button();
            this.CaptureImage = new System.Windows.Forms.Button();
            this.Save = new System.Windows.Forms.Button();
            this.Properties = new System.Windows.Forms.Button();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.TriggerOff = new System.Windows.Forms.RadioButton();
            this.TriggerRising = new System.Windows.Forms.RadioButton();
            this.TriggerSoftware = new System.Windows.Forms.RadioButton();
            this.TriggerFalling = new System.Windows.Forms.RadioButton();
            this.Info1 = new System.Windows.Forms.TextBox();
            this.Info2 = new System.Windows.Forms.TextBox();
            this.Info3 = new System.Windows.Forms.TextBox();
            this.InfoList = new System.Windows.Forms.ListBox();
            this.Direct3D = new System.Windows.Forms.CheckBox();
            this.axuEyeCam = new AxuEyeCamLib.AxuEyeCam();
            this.groupBox1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.axuEyeCam)).BeginInit();
            this.SuspendLayout();
            // 
            // Init
            // 
            this.Init.Location = new System.Drawing.Point(8, 8);
            this.Init.Name = "Init";
            this.Init.Size = new System.Drawing.Size(128, 24);
            this.Init.TabIndex = 0;
            this.Init.Text = "Init Camera";
            this.Init.Click += new System.EventHandler(this.Init_Click);
            // 
            // Snap
            // 
            this.Snap.Location = new System.Drawing.Point(8, 93);
            this.Snap.Name = "Snap";
            this.Snap.Size = new System.Drawing.Size(128, 24);
            this.Snap.TabIndex = 3;
            this.Snap.Text = "Freeze";
            this.Snap.Click += new System.EventHandler(this.Snap_Click);
            // 
            // CaptureImage
            // 
            this.CaptureImage.Location = new System.Drawing.Point(8, 64);
            this.CaptureImage.Name = "CaptureImage";
            this.CaptureImage.Size = new System.Drawing.Size(128, 24);
            this.CaptureImage.TabIndex = 2;
            this.CaptureImage.Text = "Stop capture";
            this.CaptureImage.Click += new System.EventHandler(this.Capture_Click);
            // 
            // Save
            // 
            this.Save.Location = new System.Drawing.Point(8, 36);
            this.Save.Name = "Save";
            this.Save.Size = new System.Drawing.Size(128, 24);
            this.Save.TabIndex = 1;
            this.Save.Text = "Save Image";
            this.Save.Click += new System.EventHandler(this.Save_Click);
            // 
            // Properties
            // 
            this.Properties.Location = new System.Drawing.Point(8, 368);
            this.Properties.Name = "Properties";
            this.Properties.Size = new System.Drawing.Size(128, 24);
            this.Properties.TabIndex = 11;
            this.Properties.Text = "Properties";
            this.Properties.Click += new System.EventHandler(this.Properties_Click);
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.TriggerOff);
            this.groupBox1.Controls.Add(this.TriggerRising);
            this.groupBox1.Controls.Add(this.TriggerSoftware);
            this.groupBox1.Controls.Add(this.TriggerFalling);
            this.groupBox1.Location = new System.Drawing.Point(8, 147);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(128, 117);
            this.groupBox1.TabIndex = 5;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "Trigger mode";
            // 
            // TriggerOff
            // 
            this.TriggerOff.Location = new System.Drawing.Point(12, 24);
            this.TriggerOff.Name = "TriggerOff";
            this.TriggerOff.Size = new System.Drawing.Size(88, 16);
            this.TriggerOff.TabIndex = 6;
            this.TriggerOff.Text = "Off";
            this.TriggerOff.Click += new System.EventHandler(this.TriggerOff_Click);
            // 
            // TriggerRising
            // 
            this.TriggerRising.Location = new System.Drawing.Point(12, 93);
            this.TriggerRising.Name = "TriggerRising";
            this.TriggerRising.Size = new System.Drawing.Size(88, 16);
            this.TriggerRising.TabIndex = 9;
            this.TriggerRising.Text = "Rising edge";
            this.TriggerRising.Click += new System.EventHandler(this.TriggerRising_Click);
            // 
            // TriggerSoftware
            // 
            this.TriggerSoftware.Location = new System.Drawing.Point(12, 47);
            this.TriggerSoftware.Name = "TriggerSoftware";
            this.TriggerSoftware.Size = new System.Drawing.Size(80, 16);
            this.TriggerSoftware.TabIndex = 7;
            this.TriggerSoftware.Text = "Software";
            this.TriggerSoftware.Click += new System.EventHandler(this.TriggerSoftware_Click);
            // 
            // TriggerFalling
            // 
            this.TriggerFalling.Location = new System.Drawing.Point(12, 70);
            this.TriggerFalling.Name = "TriggerFalling";
            this.TriggerFalling.Size = new System.Drawing.Size(96, 16);
            this.TriggerFalling.TabIndex = 8;
            this.TriggerFalling.Text = "Falling edge";
            this.TriggerFalling.Click += new System.EventHandler(this.TriggerFalling_Click);
            // 
            // Info1
            // 
            this.Info1.Location = new System.Drawing.Point(144, 370);
            this.Info1.Name = "Info1";
            this.Info1.ReadOnly = true;
            this.Info1.Size = new System.Drawing.Size(176, 20);
            this.Info1.TabIndex = 9;
            this.Info1.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
            // 
            // Info2
            // 
            this.Info2.Location = new System.Drawing.Point(320, 370);
            this.Info2.Name = "Info2";
            this.Info2.ReadOnly = true;
            this.Info2.Size = new System.Drawing.Size(224, 20);
            this.Info2.TabIndex = 10;
            this.Info2.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
            // 
            // Info3
            // 
            this.Info3.Location = new System.Drawing.Point(544, 370);
            this.Info3.Name = "Info3";
            this.Info3.ReadOnly = true;
            this.Info3.Size = new System.Drawing.Size(80, 20);
            this.Info3.TabIndex = 15;
            this.Info3.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
            // 
            // InfoList
            // 
            this.InfoList.Location = new System.Drawing.Point(8, 268);
            this.InfoList.Name = "InfoList";
            this.InfoList.SelectionMode = System.Windows.Forms.SelectionMode.None;
            this.InfoList.Size = new System.Drawing.Size(128, 95);
            this.InfoList.TabIndex = 10;
            // 
            // Direct3D
            // 
            this.Direct3D.Location = new System.Drawing.Point(20, 123);
            this.Direct3D.Name = "Direct3D";
            this.Direct3D.Size = new System.Drawing.Size(104, 20);
            this.Direct3D.TabIndex = 4;
            this.Direct3D.Text = "use Direct3D";
            this.Direct3D.CheckedChanged += new System.EventHandler(this.Direct3D_CheckedChanged);
            // 
            // axuEyeCam
            // 
            this.axuEyeCam.Enabled = true;
            this.axuEyeCam.Location = new System.Drawing.Point(144, 8);
            this.axuEyeCam.Name = "axuEyeCam";
            this.axuEyeCam.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axuEyeCam.OcxState")));
            this.axuEyeCam.Size = new System.Drawing.Size(480, 355);
            this.axuEyeCam.TabIndex = 16;
            // 
            // Form1
            // 
            this.AllowDrop = true;
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(632, 396);
            this.Controls.Add(this.axuEyeCam);
            this.Controls.Add(this.Direct3D);
            this.Controls.Add(this.Info3);
            this.Controls.Add(this.Info2);
            this.Controls.Add(this.Info1);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.Properties);
            this.Controls.Add(this.Save);
            this.Controls.Add(this.CaptureImage);
            this.Controls.Add(this.Snap);
            this.Controls.Add(this.Init);
            this.Controls.Add(this.InfoList);
            this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
            this.MaximizeBox = false;
            this.Name = "Form1";
            this.Text = "IDS uEye ActiveX";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
            this.groupBox1.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.axuEyeCam)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }
        #endregion

        /// <summary>
        /// Der Haupteinstiegspunkt für die Anwendung.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new Form1());
        }

        private void Form1_Load(object sender, System.EventArgs e)
        {
            UpdateControls( );
        }

        private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            axuEyeCam.ExitCamera();
        }

        private void UpdateControls( )
        {
            Save.Enabled = m_bCameraOpen;
            CaptureImage.Enabled = m_bCameraOpen;
            Snap.Enabled = m_bCameraOpen;
            Properties.Enabled = m_bCameraOpen;
            TriggerOff.Enabled = m_bCameraOpen;

            bool bTriggerSoftware = false;
            bool bTriggerLoHi = false;
            bool bTriggerHiLo = false;
            m_bContinuousTriggerSupported = false;

            if (m_bCameraOpen)
            {
                int nSupportedTriggerMode = axuEyeCam.SetExternalTrigger(uEye_defines.IS_GET_SUPPORTED_TRIGGER_MODE);
                if ((nSupportedTriggerMode & uEye_defines.IS_SET_TRIG_SOFTWARE) == uEye_defines.IS_SET_TRIG_SOFTWARE)
                {
                    bTriggerSoftware = true;
                }

                if ((nSupportedTriggerMode & uEye_defines.IS_SET_TRIG_LO_HI) == uEye_defines.IS_SET_TRIG_LO_HI)
                {
                    bTriggerLoHi = true;
                }

                if ((nSupportedTriggerMode & uEye_defines.IS_SET_TRIG_HI_LO) == uEye_defines.IS_SET_TRIG_HI_LO)
                {
                    bTriggerHiLo = true;
                }

                if ((nSupportedTriggerMode & uEye_defines.IS_SET_TRIGGER_CONTINUOUS) == uEye_defines.IS_SET_TRIGGER_CONTINUOUS)
                {
                    m_bContinuousTriggerSupported = true;
                }
            }

            TriggerSoftware.Enabled = m_bCameraOpen & bTriggerSoftware;
            TriggerFalling.Enabled = m_bCameraOpen & bTriggerHiLo;
            TriggerRising.Enabled = m_bCameraOpen & bTriggerLoHi;

            if( m_bCameraOpen )
            {
                Init.Text = "Exit Camera";
                Info1.Text = String.Format("{0} SerNo:{1}", axuEyeCam.GetSensorName(), axuEyeCam.GetSerialNumber());
                Info2.Text = String.Format("{0} x {1}", axuEyeCam.GetImageWidth().ToString(), axuEyeCam.GetImageHeight().ToString() );
                Direct3D.Checked = axuEyeCam.EnableDirect3D;
            }
            else
            {
                Init.Text = "Init Camera";
                Info1.Text = String.Format("No open camera");
                Info2.Text = "-";
                Info3.Text = "0 fps";

                TriggerOff.Checked = true;
            }

            if( axuEyeCam.EnableDirect3D )
            {
                Info2.Text = "Click to draw a cross!";
            }
        }

        private void Init_Click(object sender, System.EventArgs e)
        {
            m_MemAddr = 0;
            if( m_bCameraOpen )
            {
                axuEyeCam.ExitCamera();

                m_bCameraOpen = false;
                m_bLive = false;

                // Disable events
                axuEyeCam.EnableEvent( uEye_defines.IS_FRAME, 0 );  
                axuEyeCam.EnableEvent( uEye_defines.IS_DEVICE_REMOVED, 0 ); 
                axuEyeCam.EnableEvent( uEye_defines.IS_TRANSFER_FAILED, 0 );
                axuEyeCam.EnableEvent( uEye_defines.IS_TRIGGER, 0 );

                axuEyeCam.EventOnFrame -= axuEyeCam_EventOnFrame;
                axuEyeCam.EventOnTransferFailed -= axuEyeCam_EventOnTransferFailed;
                axuEyeCam.MouseMoveEvent -= axuEyeCam_MouseMoveEvent;
                axuEyeCam.MouseDownEvent -= axuEyeCam_MouseDownEvent;
            }
            else
            {
                int nRet = axuEyeCam.InitCamera (0);
                if (nRet == uEye_defines.IS_STARTER_FW_UPLOAD_NEEDED)
                {
                    int nUploadTime = 0;
                    axuEyeCam.GetDuration (uEye_defines.IS_STARTER_FW_UPLOAD, ref nUploadTime);

                    String Str;
                    Str = "This camera requires a new firmware. The upload will take about " + (nUploadTime / 1000).ToString() + " seconds.";

                    MessageBox.Show(Str);

                    nRet = axuEyeCam.InitCamera(0 | uEye_defines.IS_ALLOW_STARTER_FW_UPLOAD);
                }

                if (nRet == uEye_defines.IS_SUCCESS)
                {               
                    m_bCameraOpen = true;
                    m_bLive = true;

                    // Enable events
                    axuEyeCam.EnableEvent( uEye_defines.IS_FRAME, 1 );  
                    axuEyeCam.EnableEvent( uEye_defines.IS_DEVICE_REMOVED, 1 ); 
                    axuEyeCam.EnableEvent( uEye_defines.IS_TRANSFER_FAILED, 1 );
                    axuEyeCam.EnableEvent( uEye_defines.IS_TRIGGER, 1 );

                    axuEyeCam.EventOnFrame += axuEyeCam_EventOnFrame;
                    axuEyeCam.EventOnTransferFailed += axuEyeCam_EventOnTransferFailed;
                    axuEyeCam.MouseMoveEvent += axuEyeCam_MouseMoveEvent;
                    axuEyeCam.MouseDownEvent += axuEyeCam_MouseDownEvent;

                    m_nTransferFailed = 0;
                    m_nTransferFailedOld = 0;
                    InfoList.Items.Clear();
                    InfoList.Items.Add( String.Format( "{0} opened!", axuEyeCam.GetSensorName() ));

                    // Set the trigger timeout to 5 s (500 = 5000 ms)
                    axuEyeCam.SetTimeout(uEye_defines.IS_TRIGGER_TIMEOUT, 500);
                }
                else
                {
                    MessageBox.Show("Init failed","Could not open camera!");
                }
            }

            UpdateControls( );
        }

        private void Snap_Click(object sender, System.EventArgs e)
        {
            axuEyeCam.FreezeImage(uEye_defines.IS_DONT_WAIT);
            m_bLive = false;
            CaptureImage.Text = "Start capture";
        }

        private void Capture_Click(object sender, System.EventArgs e)
        {
            if(m_bLive)
            {
                // Stop capture
                axuEyeCam.StopLiveVideo(uEye_defines.IS_WAIT);
                m_bLive = false;
                CaptureImage.Text = "Start capture";
            }
            else
            {
                if (!m_bContinuousTriggerSupported && (TriggerOff.Checked == false))
                {
                    // Stop capture
                    axuEyeCam.StopLiveVideo(uEye_defines.IS_WAIT);
                    m_bLive = false;
                    CaptureImage.Text = "Start capture";

                    MessageBox.Show("The continuous trigger mode is not supported by this camera");
                }
                else
                {
                    // Start capture
                    axuEyeCam.StartLiveVideo(1);
                    m_bLive = true;
                    CaptureImage.Text = "Stop capture";
                }
            }
        }

        private void Save_Click(object sender, System.EventArgs e)
        {
            axuEyeCam.SaveImage("Test.jpg");
        }

        private void Properties_Click(object sender, System.EventArgs e)
        {
            axuEyeCam.PropertyDialog();
            UpdateControls();
        }

        private void Direct3D_CheckedChanged(object sender, System.EventArgs e)
        {
            axuEyeCam.EnableDirect3D = Direct3D.Checked;
            UpdateControls();
        }

        private void axuEyeCam_EventOnTrigger(object sender, System.EventArgs e)
        {
        }

        private void axuEyeCam_EventOnTransferFailed(object sender, System.EventArgs e)
        {
            m_nTransferFailed++;
        }

        void t1_Tick(object sender, EventArgs e)
        {
            if (m_bCameraOpen && (m_nTransferFailedOld != m_nTransferFailed))
            {
                String str;
                str = "Transfer failed: " + m_nTransferFailed;
                InfoList.Items.Add(str);

                m_nTransferFailedOld = m_nTransferFailed;
            }
        }

        private delegate void UpdateFPS();
        private void ShowFPS()
        {
            Info3.Text = String.Format(" {0} fps ", axuEyeCam.GetFramesPerSecond().ToString().Substring(0, 5));
        }

        private void axuEyeCam_EventOnFrame(object sender, AxuEyeCamLib._DuEyeCamEvents_EventOnFrameEvent e)
        {
            Info3.Invoke(new UpdateFPS(ShowFPS));
            m_MemAddr = System.Convert.ToInt64(axuEyeCam.GetImageMem());
        }

        private void axuEyeCam_MouseMoveEvent(object sender, AxuEyeCamLib._DuEyeCamEvents_MouseMoveEvent e)
        {
            if( m_bCameraOpen && !axuEyeCam.EnableDirect3D )
            {   
                int x = 0, y = 0;
                int width = 0, height = 0, bits = 0, pitch = 0;
                axuEyeCam.InquireImageMem( ref width, ref height, ref bits, ref pitch );

                if( axuEyeCam.InitFitToWindow )
                {
                    x = e.x * width / axuEyeCam.Size.Width;
                    y = e.y * height / axuEyeCam.Size.Height;
                }
                else
                {
                    x = e.x;
                    y = e.y;
                }
                if( (x < 0) || (x > width) || (y < 0) || (y > height) )
                {
                    Info2.Text = String.Format("Invalid position");
                    return; 
                }

                if (this.m_MemAddr != 0)
                {                
                    // try to get the rgb values (in case of 24 or 32 bit images)
                    // on Y8 images you got 3 Y values
                    try
                    {   
                        rgb[0] = Marshal.ReadByte( (IntPtr)this.m_MemAddr, (y*width + x)*bits/8 );
                        rgb[1] = Marshal.ReadByte( (IntPtr)this.m_MemAddr, (y*width + x)*bits/8 + 1 );
                        rgb[2] = Marshal.ReadByte( (IntPtr)this.m_MemAddr, (y*width + x)*bits/8 + 2 );
                    }
                    catch(Exception ee)
                    {
                        Console.WriteLine("ScanForm : " + ee.Message + " Type : " + ee.GetType().ToString());
                    }                   
                    Info2.Text = String.Format(" ({0},{1}) = ({2},{3},{4})", x, y, rgb[0], rgb[1], rgb[2] );
                }   // end if (this.m_MemAddr != 0)
                else
                {
                    Info2.Text = String.Format(" ({0},{1}) = (N/A)", x, y);
                }
            }
        }

        private void axuEyeCam_EventOnDeviceRemoved(object sender, System.EventArgs e)
        {
            // Enable reconnect message
            axuEyeCam.EnableEvent( uEye_defines.IS_DEVICE_RECONNECTED, 1 );
            InfoList.Items.Add( String.Format( "Camera disconnected!"));
            Info1.Text = "Camera disconnected!!";
        }

        private void axuEyeCam_EventOnDeviceReconnected(object sender, System.EventArgs e)
        {
            // Disable reconnect message
            axuEyeCam.EnableEvent( uEye_defines.IS_DEVICE_RECONNECTED, 0 );
            InfoList.Items.Add( String.Format( "Camera reconnected!")); 
            UpdateControls();
        }

        private void axuEyeCam_Error(object sender, AxuEyeCamLib._DuEyeCamEvents_ErrorEvent e)
        {
            InfoList.Items.Add( String.Format( "Error No.{0}, {1}", e.number, e.description ) );
        }

        private void axuEyeCam_MouseDownEvent(object sender, AxuEyeCamLib._DuEyeCamEvents_MouseDownEvent e)
        {
            if( axuEyeCam.EnableDirect3D && m_bCameraOpen )
            {
                System.Drawing.Point p = new System.Drawing.Point( e.x, e.y );
                DrawCross (p);
                axuEyeCam.ShowDirect3DOverlay = true;
            }       
        }

        private void DrawCross (System.Drawing.Point e )
        {
            // Get the size of the display window
            int nDisplayHeight = axuEyeCam.Height;
            int nDisplayWidth = axuEyeCam.Width;
            int nImageHeight = 0;
            int nImageWidth = 0;

            // Get the image size
            axuEyeCam.GetImageSize(ref nImageWidth, ref nImageHeight);

            double dblScaleFactorX = 1.0;
            double dblScaleFactorY = 1.0;

            // Calculate the scaling factors between the image and the display 
            // to show a cross with the correct size
            if ((axuEyeCam.GetRenderMode() & uEye_defines.IS_RENDER_FIT_TO_WINDOW) != 0)
            {
                dblScaleFactorX = (double)nImageWidth / (double)nDisplayWidth;
                dblScaleFactorY = (double)nImageHeight / (double)nDisplayHeight;
            }

            // Create a pen with the color red
            System.Drawing.SolidBrush brush;
            brush = new System.Drawing.SolidBrush (System.Drawing.Color.Red);
            System.Drawing.Pen pen = new System.Drawing.Pen( brush, 3) ;

            // Calculate the correct position of the cross (depending on the scaling factors)
            int x = (int)((double)e.X * dblScaleFactorX);
            int y = (int)((double)e.Y * dblScaleFactorY);

            // Calculate the correct width and height of the cross
            int nCrossWidth = (int)(10 * dblScaleFactorX);
            int nCrossHeight = (int)(10 * dblScaleFactorY);

            System.Drawing.Point pt1 = new System.Drawing.Point( x - nCrossWidth, y - nCrossHeight );
            System.Drawing.Point pt2 = new System.Drawing.Point( x + nCrossWidth, y + nCrossHeight );
            System.Drawing.Point pt3 = new System.Drawing.Point( x + nCrossWidth, y - nCrossHeight );
            System.Drawing.Point pt4 = new System.Drawing.Point( x - nCrossWidth, y + nCrossHeight );

            // Set the Direct3D key color to black
            axuEyeCam.Direct3DKeyColor = System.Drawing.Color.Black;

            // Clear the Direct3D overlay
            axuEyeCam.ClearDirect3DOverlay ();

            // Get the DC of the Direct3D overlay
            int hdc = axuEyeCam.GetDC();
            System.Drawing.Graphics DC = System.Drawing.Graphics.FromHdc( (System.IntPtr)hdc );

            DC.DrawLine( pen, pt1, pt2 );
            DC.DrawLine( pen, pt3, pt4 );

            // Release the DC of the Direct3D overlay
            axuEyeCam.ReleaseDC( hdc );
        }

        private void TriggerOff_Click(object sender, System.EventArgs e)
        {
            if(m_bLive)
            {
                axuEyeCam.StopLiveVideo( uEye_defines.IS_WAIT );
            }

            // Disable trigger
            if (axuEyeCam.SetExternalTrigger(uEye_defines.IS_SET_TRIGGER_OFF) != uEye_defines.IS_SUCCESS)
            {
                if (m_nCurrentMode == 1)
                {
                    TriggerOff.Checked = false;
                    TriggerSoftware.Checked = true;
                    TriggerRising.Checked = false;
                    TriggerFalling.Checked = false;
                }
                else if (m_nCurrentMode == 2)
                {
                    TriggerOff.Checked = false;
                    TriggerSoftware.Checked = false;
                    TriggerRising.Checked = false;
                    TriggerFalling.Checked = true;
                }
                else if (m_nCurrentMode == 3)
                {
                    TriggerOff.Checked = false;
                    TriggerSoftware.Checked = false;
                    TriggerRising.Checked = true;
                    TriggerFalling.Checked = false;
                }

                MessageBox.Show("The trigger mode can not be disabled with the current settings");

                return;
            }

            if(m_bLive)
            {
                axuEyeCam.StartLiveVideo(1);
            }

            m_nCurrentMode = 0;
        }

        private void TriggerSoftware_Click(object sender, System.EventArgs e)
        {
            if(m_bLive)
            {
                axuEyeCam.StopLiveVideo( uEye_defines.IS_WAIT );
            }

            // Enable software trigger
            axuEyeCam.SetExternalTrigger( uEye_defines.IS_SET_TRIGGER_SOFTWARE );

            if(m_bLive)
            {
                if (m_bContinuousTriggerSupported)
                {
                    axuEyeCam.StartLiveVideo(1);
                }
                else
                {
                    // Stop capture
                    axuEyeCam.StopLiveVideo(uEye_defines.IS_WAIT);
                    m_bLive = false;
                    CaptureImage.Text = "Start capture";
                }
            }

            m_nCurrentMode = 1;
        }

        private void TriggerFalling_Click(object sender, System.EventArgs e)
        {
            if(m_bLive)
            {
                axuEyeCam.StopLiveVideo( uEye_defines.IS_WAIT );
            }

            // Enable hardware trigger falling
            axuEyeCam.SetExternalTrigger( uEye_defines.IS_SET_TRIGGER_HI_LO );

            if(m_bLive)
            {
                axuEyeCam.StartLiveVideoWait(100);
            }

            m_nCurrentMode = 2;
        }

        private void TriggerRising_Click(object sender, System.EventArgs e)
        {
            if(m_bLive)
            {
                axuEyeCam.StopLiveVideo( uEye_defines.IS_WAIT );
            }

            // Enable hardware trigger rising
            axuEyeCam.SetExternalTrigger( uEye_defines.IS_SET_TRIGGER_LO_HI );

            if(m_bLive)
            {
                axuEyeCam.StartLiveVideoWait(100);
            }

            m_nCurrentMode = 3;
        }
    }
} 

using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;

public class ThreadedTcpSrvr {

   private TcpListener client;

   public ThreadedTcpSrvr()
   {
      client = new TcpListener(9050);
      client.Start();

<pre>
  Console.WriteLine("Waiting for clients...");
  while(true)
  {
     while (!client.Pending())
     {
        Thread.Sleep(1000);
     }

     ConnectionThread newconnection = new ConnectionThread();
     newconnection.threadListener = this.client;
     Thread newthread = new Thread(new
               ThreadStart(newconnection.HandleConnection));
     newthread.Start();
  }

// List<ProdTotalSales> salesLst
ProdTotalSales ps = salesLst.First(p => p.Month == o.OrderDatum.Month);
ps.Antal += r.BestSaldo;