基本信息

---

下载

   友情提示：（无需注册或充值，赞助后即可获取资源下载链接）

---

     嘿，亲！知识可是无价之宝呢，但咱这精心整理的资料也耗费了不少心血呀。小小地破费一下，绝对物超所值哦！如有下载和支付问题，请联系我们QQ(微信同号)：78630559

本次赞助数额为： 2 元　

支付宝支付

微信支付

   源码介绍

---

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using PylonLiveView;
using PylonC.NETSupportLibrary;
using HalconDotNet;


namespace Balser
{
    public partial class MainForm : Form
    {
        private ImageProvider m_imageProvider = new ImageProvider(); /* Create one image provider. */
        private Bitmap m_bitmap = null; /* The bitmap is used for displaying the image. */
        public HObject ho_Image, ho_Edges;

        public MainForm()
        {
            InitializeComponent();

            /* Register for the events of the image provider needed for proper operation. */
            m_imageProvider.GrabErrorEvent  = new ImageProvider.GrabErrorEventHandler(OnGrabErrorEventCallback);
            m_imageProvider.DeviceRemovedEvent  = new ImageProvider.DeviceRemovedEventHandler(OnDeviceRemovedEventCallback);
            m_imageProvider.DeviceOpenedEvent  = new ImageProvider.DeviceOpenedEventHandler(OnDeviceOpenedEventCallback);
            m_imageProvider.DeviceClosedEvent  = new ImageProvider.DeviceClosedEventHandler(OnDeviceClosedEventCallback);
            m_imageProvider.GrabbingStartedEvent  = new ImageProvider.GrabbingStartedEventHandler(OnGrabbingStartedEventCallback);
            m_imageProvider.ImageReadyEvent  = new ImageProvider.ImageReadyEventHandler(OnImageReadyEventCallback);
            m_imageProvider.GrabbingStoppedEvent  = new ImageProvider.GrabbingStoppedEventHandler(OnGrabbingStoppedEventCallback);


            /* Enable the tool strip buttons according to the state of the image provider. */
            EnableButtons(m_imageProvider.IsOpen, false);
            btn_SavePicture.Enabled = false;

        }


        /* Handles the event related to the occurrence of an error while grabbing proceeds. */
        private void OnGrabErrorEventCallback(Exception grabException, string additionalErrorMessage)
        {
            if (InvokeRequired)
            {
                /* If called from a different thread, we must use the Invoke method to marshal the call to the proper thread. */
                BeginInvoke(new ImageProvider.GrabErrorEventHandler(OnGrabErrorEventCallback), grabException, additionalErrorMessage);
                return;
            }
            ShowException(grabException, additionalErrorMessage);
        }

        /* Handles the event related to the removal of a currently open device. */
        private void OnDeviceRemovedEventCallback()
        {
            if (InvokeRequired)
            {
                /* If called from a different thread, we must use the Invoke method to marshal the call to the proper thread. */
                BeginInvoke(new ImageProvider.DeviceRemovedEventHandler(OnDeviceRemovedEventCallback));
                return;
            }
            /* Disable the buttons. */
            EnableButtons(false, false);
            /* Stops the grabbing of images. */
            Stop();
            /* Close the image provider. */
            CloseTheImageProvider();
            /* Since one device is gone, the list needs to be updated. */
            UpdateDeviceList();
        }

        /* Handles the event related to a device being open. */
        private void OnDeviceOpenedEventCallback()
        {
            if (InvokeRequired)
            {
                /* If called from a different thread, we must use the Invoke method to marshal the call to the proper thread. */
                BeginInvoke(new ImageProvider.DeviceOpenedEventHandler(OnDeviceOpenedEventCallback));
                return;
            }
            /* The image provider is ready to grab. Enable the grab buttons. */
            EnableButtons(true, false);
        }

        /* Handles the event related to a device being closed. */
        private void OnDeviceClosedEventCallback()
        {
            if (InvokeRequired)
            {
                /* If called from a different thread, we must use the Invoke method to marshal the call to the proper thread. */
                BeginInvoke(new ImageProvider.DeviceClosedEventHandler(OnDeviceClosedEventCallback));
                return;
            }
            /* The image provider is closed. Disable all buttons. */
            EnableButtons(false, false);
        }

        /* Handles the event related to the image provider executing grabbing. */
        private void OnGrabbingStartedEventCallback()
        {
            if (InvokeRequired)
            {
                /* If called from a different thread, we must use the Invoke method to marshal the call to the proper thread. */
                BeginInvoke(new ImageProvider.GrabbingStartedEventHandler(OnGrabbingStartedEventCallback));
                return;
            }

            /* Do not update device list while grabbing to avoid jitter because the GUI-Thread is blocked for a short time when enumerating. */
            updateDeviceListTimer.Stop();

            /* The image provider is grabbing. Disable the grab buttons. Enable the stop button. */
            EnableButtons(false, true);
        }

        /* Handles the event related to an image having been taken and waiting for processing. */
        private void OnImageReadyEventCallback()
        {
            if (InvokeRequired)
            {
                /* If called from a different thread, we must use the Invoke method to marshal the call to the proper thread. */
                BeginInvoke(new ImageProvider.ImageReadyEventHandler(OnImageReadyEventCallback));
                return;
            }

            try
            {
                /* Acquire the image from the image provider. Only show the latest image. The camera may acquire images faster than images can be displayed*/
                ImageProvider.Image image = m_imageProvider.GetLatestImage();

                


                /* Check if the image has been removed in the meantime. */
                if (image != null)
                {
                    /* Check if the image is compatible with the currently used bitmap. */
                    if (BitmapFactory.IsCompatible(m_bitmap, image.Width, image.Height, image.Color))
                    {
                        /* Update the bitmap with the image data. */
                        BitmapFactory.UpdateBitmap(m_bitmap, image.Buffer, image.Width, image.Height, image.Color);
                        /* To show the new image, request the display control to update itself. */
                        pictureBox.Refresh();
                    }
                    else /* A new bitmap is required. */
                    {
                        BitmapFactory.CreateBitmap(out m_bitmap, image.Width, image.Height, image.Color);
                        BitmapFactory.UpdateBitmap(m_bitmap, image.Buffer, image.Width, image.Height, image.Color);
                        /* We have to dispose the bitmap after assigning the new one to the display control. */
                        Bitmap bitmap = pictureBox.Image as Bitmap;
                        /* Provide the display control with the new bitmap. This action automatically updates the display. */

                        pictureBox.Image = m_bitmap;
                        if (bitmap != null)
                        {
                            /* Dispose the bitmap. */
                            bitmap.Dispose();
                        }
                    }
                    /* The processing of the image is done. Release the image buffer. */
                    m_imageProvider.ReleaseImage();
                    /* The buffer can be used for the next image grabs. */
                }
            }
            catch (Exception e)
            {
                ShowException(e, m_imageProvider.GetLastErrorMessage());
            }
        }

        /* Handles the event related to the image provider having stopped grabbing. */
        private void OnGrabbingStoppedEventCallback()
        {
            if (InvokeRequired)
            {
                /* If called from a different thread, we must use the Invoke method to marshal the call to the proper thread. */
                BeginInvoke(new ImageProvider.GrabbingStoppedEventHandler(OnGrabbingStoppedEventCallback));
                return;
            }

            /* Enable device list update again */
            updateDeviceListTimer.Start();

            /* The image provider stopped grabbing. Enable the grab buttons. Disable the stop button. */
            EnableButtons(m_imageProvider.IsOpen, false);
        }

        /* Helps to set the states of all buttons. */
        private void EnableButtons(bool canGrab, bool canStop)
        {
            toolStripButtonContinuousShot.Enabled = canGrab;
            toolStripButtonOneShot.Enabled = canGrab;
            toolStripButtonStop.Enabled = canStop;
        }

        /* Stops the image provider and handles exceptions. */
        private void Stop()
        {
            /* Stop the grabbing. */
            try
            {
                m_imageProvider.Stop();
            }
            catch (Exception e)
            {
                ShowException(e, m_imageProvider.GetLastErrorMessage());
            }
        }

        /* Closes the image provider and handles exceptions. */
        private void CloseTheImageProvider()
        {
            /* Close the image provider. */
            try
            {
                m_imageProvider.Close();
            }
            catch (Exception e)
            {
                ShowException(e, m_imageProvider.GetLastErrorMessage());
            }
        }

        /* Starts the grabbing of one image and handles exceptions. */
        private void OneShot()
        {
            try
            {
                m_imageProvider.OneShot(); /* Starts the grabbing of one image. */
            }
            catch (Exception e)
            {
                ShowException(e, m_imageProvider.GetLastErrorMessage());
            }
        }

        /* Starts the grabbing of images until the grabbing is stopped and handles exceptions. */
        private void ContinuousShot()
        {
            try
            {
                m_imageProvider.ContinuousShot(); /* Start the grabbing of images until grabbing is stopped. */
            }
            catch (Exception e)
            {
                ShowException(e, m_imageProvider.GetLastErrorMessage());
            }
        }

        private void UpdateDeviceList()
        {
            try
            {
                /* Ask the device enumerator for a list of devices. */
                List<DeviceEnumerator.Device> list = DeviceEnumerator.EnumerateDevices();

                ListView.ListViewItemCollection items = deviceListView.Items;

                /* Add each new device to the list. */
                foreach (DeviceEnumerator.Device device in list)
                {
                    bool newitem = true;
                    /* For each enumerated device check whether it is in the list view. */
                    foreach (ListViewItem item in items)
                    {
                        /* Retrieve the device data from the list view item. */
                        DeviceEnumerator.Device tag = item.Tag as DeviceEnumerator.Device;

                        if (tag.FullName == device.FullName)
                        {
                            /* Update the device index. The index is used for opening the camera. It may change when enumerating devices. */
                            tag.Index = device.Index;
                            /* No new item needs to be added to the list view */
                            newitem = false;
                            break;
                        }
                    }

                    /* If the device is not in the list view yet the add it to the list view. */
                    if (newitem)
                    {
                        ListViewItem item = new ListViewItem(device.Name);
                        if (device.Tooltip.Length > 0)
                        {
                            item.ToolTipText = device.Tooltip;
                        }
                        item.Tag = device;

                        /* Attach the device data. */
                        deviceListView.Items.Add(item);
                    }
                }

                /* Delete old devices which are removed. */
                foreach (ListViewItem item in items)
                {
                    bool exists = false;

                    /* For each device in the list view check whether it has not been found by device enumeration. */
                    foreach (DeviceEnumerator.Device device in list)
                    {
                        if (((DeviceEnumerator.Device)item.Tag).FullName == device.FullName)
                        {
                            exists = true;
                            break;
                        }
                    }
                    /* If the device has not been found by enumeration then remove from the list view. */
                    if (!exists)
                    {
                        deviceListView.Items.Remove(item);
                    }
                }
            }
            catch (Exception e)
            {
                ShowException(e, m_imageProvider.GetLastErrorMessage());
            }
        }

        /* Shows exceptions in a message box. */
        private void ShowException(Exception e, string additionalErrorMessage)
        {
            string more = "\n\nLast error message (may not belong to the exception):\n"   additionalErrorMessage;
            MessageBox.Show("Exception caught:\n"   e.Message   (additionalErrorMessage.Length > 0 ? more : ""), "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }

        private void updateDeviceListTimer_Tick(object sender, EventArgs e)
        {
            UpdateDeviceList();
        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            /* Stops the grabbing of images. */
            Stop();
            /* Close the image provider. */
            CloseTheImageProvider();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void deviceListView_KeyDown(object sender, KeyEventArgs ev)
        {
            if (ev.KeyCode == Keys.F5)
            {
                ev.Handled = true;
                /* Update the list of available devices in the upper left area. */
                UpdateDeviceList();
            }
        }

        private void deviceListView_SelectedIndexChanged(object sender, EventArgs ev)
        {
            /* Close the currently open image provider. */
            /* Stops the grabbing of images. */
            Stop();
            /* Close the image provider. */
            CloseTheImageProvider();

            /* Open the selected image provider. */
            if (deviceListView.SelectedItems.Count > 0)
            {
                /* Get the first selected item. */
                ListViewItem item = deviceListView.SelectedItems[0];
                /* Get the attached device data. */
                DeviceEnumerator.Device device = item.Tag as DeviceEnumerator.Device;
                try
                {
                    /* Open the image provider using the index from the device data. */
                    m_imageProvider.Open(device.Index);
                }
                catch (Exception e)
                {
                    ShowException(e, m_imageProvider.GetLastErrorMessage());
                }
            }
        }

        private void toolStripButtonOneShot_Click(object sender, EventArgs e)
        {
            OneShot(); /* Starts the grabbing of one image. */
            btn_SavePicture.Enabled = true;

        }

        private void toolStripButtonContinuousShot_Click(object sender, EventArgs e)
        {
            ContinuousShot(); /* Start the grabbing of images until grabbing is stopped. */
            btn_SavePicture.Enabled = true;
        }

        private void toolStripButtonStop_Click(object sender, EventArgs e)
        {
            Stop(); /* Stops the grabbing of images. */
        }

        private void btn_ConnectCamera_Click(object sender, EventArgs e)
        {
            UpdateDeviceList();
        }

        private void btn_SavePicture_Click(object sender, EventArgs e)
        {
            btn_SavePicture.Enabled = false;
            string data,ImageName,direct;
            data = DateTime.Now.ToString("yyyy_MM_dd_HH_mm_ss");
            ImageName = "Image"   data ".bmp";
            direct="D:\\MyData\\Pictures\\视觉采样\\" ImageName;
            m_bitmap.Save(direct, System.Drawing.Imaging.ImageFormat.Bmp);
            btn_SavePicture.Enabled = true;

        }



    }
}