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   源码介绍

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可以通过鼠标滚轮对halcon窗口进行滑动放大
适合所有版本的HALCON

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 HalconDotNet;


namespace image_processing

{
    public partial class Form1 : Form
    {
        private int current_beginRow, current_beginCol, current_endRow, current_endCol;
        private HalconWindow wch = new HalconWindow();
        string path;//存储图片路径
        HImage hImage = new HImage();
        HObject image, gray_image, threshold_image, bin_image;//原图、灰度图、二值图
        public Form1()
        {
            InitializeComponent();
        }
        /**************************************************************************/
        /**********************加载图片********************************************/
        /**************************************************************************/
        private void button2_Click(object sender, EventArgs e)
        {
            try
            {
                OpenFileDialog file = new OpenFileDialog();
                //file.Filter = "|*.bmp;*.png;*.jpg";
                file.Filter = "BMP文件(*.bmp)|*bmp|PNG文件(*.png)|*png|JPG文件(*.jpg)|*jpg|所有文件(*.*)|*.*||";
                if (file.ShowDialog() == DialogResult.OK)
                {
                    path = file.FileName;
                    HOperatorSet.ReadImage(out image, path);
                    wch.DispImageFit(image, hWindowControl1);                   
                }
            }
            catch (Exception)
            {
                throw;
            }
        }


        /**************************************************************************/
        /**********************清空窗口********************************************/
        /**************************************************************************/
        private void btnClearWindow_Click(object sender, EventArgs e)
        {
            hWindowControl1.HalconWindow.ClearWindow();
            image = null;
        }

        /**************************************************************************/
        /**********************鼠标滚轮/按钮 缩放图片大小**************************/
        /**************************************************************************/
        private void hWindowControl1_HMouseWheel(object sender, HMouseEventArgs e)
        {
            HTuple mode = e.Delta;
            int button_state;
            double mouse_post_row, mouse_pose_col;

            hWindowControl1.HalconWindow.GetMpositionSubPix(out mouse_post_row, out mouse_pose_col, out button_state);
            wch.DispImageZoom(image, hWindowControl1, mode, mouse_post_row, mouse_pose_col);
        }
        private void btnZoomIn_Click(object sender, EventArgs e)
        {
            HTuple mode = 1;
            double mouse_post_row, mouse_pose_col;   
            hWindowControl1 .HalconWindow.GetPart(out current_beginRow, out current_beginCol, out current_endRow, out current_endCol);
            mouse_post_row = (current_endRow   current_beginRow) / 2;
            mouse_pose_col = (current_endCol   current_beginCol) / 2;
            wch.DispImageZoom(image, hWindowControl1, mode, mouse_post_row, mouse_pose_col);
        }



        private void btnZoomOut_Click(object sender, EventArgs e)
        {
            HTuple mode = -1;
            double mouse_post_row, mouse_pose_col;
            hWindowControl1.HalconWindow.GetPart(out current_beginRow, out current_beginCol, out current_endRow, out current_endCol);
            mouse_post_row = (current_endRow   current_beginRow) / 2;
            mouse_pose_col = (current_endCol   current_beginCol) / 2;
            wch.DispImageZoom(image, hWindowControl1, mode, mouse_post_row, mouse_pose_col);
        }
        private void btnFitWindow_Click(object sender, EventArgs e)
        {
            wch.DispImageFit(image, hWindowControl1);
        }

        /**************************************************************************/
        /**********************鼠标获取图片当前坐标、灰度值************************/
        /**************************************************************************/
        private void hWindowControl1_HMouseMove(object sender, HMouseEventArgs e)
        {
            if (image != null)
            {
                HTuple row, col, grayValue, imageWidth, imageHeight;
                int button_state;
                double mouse_post_row, mouse_pose_col;
                hWindowControl1.HalconWindow.GetMpositionSubPix(out mouse_post_row, out mouse_pose_col, out button_state);

                row = mouse_post_row;
                col = mouse_pose_col;
                HOperatorSet.GetImageSize(image, out imageWidth, out imageHeight);
                if (col > 0 && row > 0 && col < imageWidth && row < imageHeight)
                {
                    HOperatorSet.GetGrayval(image, row, col, out grayValue);
                }
                else
                {
                    grayValue = 0;
                }
                textBox1.Text = mouse_pose_col.ToString();
                textBox2.Text = mouse_post_row.ToString();
                textBox3.Text = grayValue.ToString();
            }
            else
            {
                textBox1.Text = null;
                textBox2.Text = null;
                textBox3.Text = null;
            }
        }


        private void btnToGray_Click(object sender, EventArgs e)
        {
            if (image != null)
            {
                HOperatorSet.Rgb1ToGray(image, out gray_image);
                wch.DispImageFit(gray_image, hWindowControl1);    
            }
        }
        private void btnThreshold_Click(object sender, EventArgs e)
        {
            if (gray_image != null)
            {
                int Threshold = tBarBin_threshold.Value;
                HOperatorSet.Threshold(gray_image, out threshold_image, 0, Threshold);
                HTuple width, height;
                HOperatorSet.GetImageSize(image, out width, out height);
                HOperatorSet.RegionToBin(threshold_image, out bin_image, 0, 255, width, height);
                HOperatorSet.DispObj(bin_image, hWindowControl1.HalconWindow);
            }
        }

    }






}