Winform窗体中实现Halcon控件中缩放图片的功能

Form1.cs

using HalconDotNet;
using System;
using System.Windows.Forms;
namespace WindowsFormsApp3
{
    public partial class Form1 : Form
    {
        HObject ho_Image = null;
        HTuple hv_AcqHandle = null, hv_width, hv_height;
        private void button1_Click(object sender, EventArgs e)
        {
            HOperatorSet.GenEmptyObj(out ho_Image);
            HOperatorSet.ReadImage(out ho_Image, "computer.png");
            HOperatorSet.GetImageSize(ho_Image, out hv_width, out hv_height);
            HOperatorSet.SetPart(hSmartWindowControl1.HalconWindow, 0, 0, hv_height - 1, hv_width - 1);
            HOperatorSet.DispObj(ho_Image, hSmartWindowControl1.HalconWindow);
        }
        public Form1()
        {
            InitializeComponent();
 
        }
        public void Form1_MouseWheel1(object sender, MouseEventArgs e)
        {
            System.Drawing.Rectangle rect = hSmartWindowControl1.RectangleToScreen(hSmartWindowControl1.ClientRectangle);
            if (rect.Contains(Cursor.Position))
            {
                hSmartWindowControl1.HSmartWindowControl_MouseWheel(sender, e);
            }
        }
        private void hSmartWindowControl1_Load(object sender, EventArgs e)
        {
 
        }
    }
}

Form.Designer.cs添加

this.MouseWheel += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseWheel1);