Halcon设置窗口背景色 C# C++，HOperatorSet.DispText报错解决

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本文详细介绍了使用Halcon C#进行图像处理时，如何正确设置hWindowControl控件的背景色，避免了直接设置属性无效的问题，并提供了有效的解决策略。同时，文章还提及了在设置背景色过程中遇到的错误及其解决方案，如HOperatorSet.DispText报错和HALCON error #5190等问题。

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窗口设置背景色

hWindowControl控件直接设置背景色属性不管用，必须先HOperatorSet.SetWindowAttr("background_color", "sky blue");，再hWindowControl1.HalconWindow.OpenWindow() 一下

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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        HObject Image;
        HTuple imgWidth, imgHeight, partRow1, partColumn1, partRow2, partColumn2;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {                        
            HOperatorSet.ReadImage(out Image, Application.StartupPath + @"\plants_05.png");
            HOperatorSet.GetImageSize(Image, out imgWidth, out imgHeight);
            double scaleWidth = imgWidth[0].D / hWindowControl1.Size.Width;
            double scaleHeight = imgHeight[0].D / hWindowControl1.Size.Height;
            if (scaleWidth >= scaleHeight)
            {
                partRow1 = -(1.0) * ((hWindowControl1.Size.Height * scaleWidth) - imgHeight) / 2;
                partColumn1 = 0;
                partRow2 = partRow1 + hWindowControl1.Size.Height * scaleWidth;
                partColumn2 = partColumn1 + hWindowControl1.Size.Width * scaleWidth;
            }
            else
            {
                partRow1 = 0;
                partColumn1 = -(1.0) * ((hWindowControl1.Size.Width * scaleHeight) - imgWidth) / 2;
                partRow2 = partRow1 + hWindowControl1.Size.Height * scaleHeight;
                partColumn2 = partColumn1 + hWindowControl1.Size.Width * scaleHeight;
            }

            //hWindowControl控件
            //hWindowControl1.HalconWindow.CloseWindow();
            //hWindowControl1.BackColor = Color.AliceBlue; /不管用
            //"sky blue"  "light blue"  "cornflower blue"
            HOperatorSet.SetWindowAttr("background_color", "sky blue"); /必须的先设置一下background_color属性，再OpenWindow一下
            hWindowControl1.HalconWindow.OpenWindow(0, 0, hWindowControl1.Width, hWindowControl1.Height, hWindowControl1.Handle, "visible", "");
            HOperatorSet.SetPart(hWindowControl1.HalconWindow, partRow1, partColumn1, partRow2, partColumn2);
            HOperatorSet.DispObj(Image, hWindowControl1.HalconWindow);



            //pictureBox控件
            HTuple wind;
            HOperatorSet.SetWindowAttr("background_color", "blue");
            HOperatorSet.OpenWindow(0, 0, pictureBox1.Width, pictureBox1.Height, pictureBox1.Handle, "visible", "", out wind);
            HOperatorSet.SetPart(wind, partRow1, partColumn1, partRow2, partColumn2);
            HOperatorSet.DispObj(Image, wind);
        }

        private void hWindowControl1_SizeChanged(object sender, EventArgs e)
        {
            double scaleWidth = imgWidth[0].D / hWindowControl1.Size.Width;
            double scaleHeight = imgHeight[0].D / hWindowControl1.Size.Height;
            if (scaleWidth >= scaleHeight)
            {
                partRow1 = -(1.0) * ((hWindowControl1.Size.Height * scaleWidth) - imgHeight) / 2;
                partColumn1 = 0;
                partRow2 = partRow1 + hWindowControl1.Size.Height * scaleWidth;
                partColumn2 = partColumn1 + hWindowControl1.Size.Width * scaleWidth;
            }
            else
            {
                partRow1 = 0;
                partColumn1 = -(1.0) * ((hWindowControl1.Size.Width * scaleHeight) - imgWidth) / 2;
                partRow2 = partRow1 + hWindowControl1.Size.Height * scaleHeight;
                partColumn2 = partColumn1 + hWindowControl1.Size.Width * scaleHeight;
            }
            HOperatorSet.SetPart(hWindowControl1.HalconWindow, partRow1, partColumn1, partRow2, partColumn2);
            HOperatorSet.DispObj(Image, hWindowControl1.HalconWindow);
        }
    }
}