调用halcon引擎有两个直接的好处：
避免C# 与halcon代码混编时可能产生的内存泄露问题
修改halcon程序时不用重新编译C#
勇哥写了一个示例，详细的应用感受和缺点限制勇哥会持续做相关的总结给大家分享。
对于halcon17来说，要运行下面的程序，你要引用
halcondotnet.dll hdevenginedonet.dll
using HalconDotNet;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApp1
{
public partial class Form1 : Form
{
private HDevEngine engine = new HDevEngine();
private HDevProgramCall programCall;
private string programPath;
private string procedurePath;
private HDevOpMultiWindowImpl MyHDevOperatorImpl;
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
var path1 = "drawCircle";
if (initialengine(path1))
{
loadengine(); inspectengine();
}
}
public bool initialengine(string filename)
{
programPath = System.Environment.CurrentDirectory + @"\" + filename + ".hdev";
procedurePath = System.Environment.CurrentDirectory + @"\";
if(!File.Exists(programPath))
{
MessageBox.Show("file not exist");
return false;
}
if (!HalconAPI.isWindows)
{
programPath = programPath.Replace("\"", "/");
procedurePath = procedurePath.Replace("\"", "/");
}
engine.SetProcedurePath(procedurePath);
// viewPort.HalconWindow.SetLineWidth(4);
MyHDevOperatorImpl = new HDevOpMultiWindowImpl(hWindowControl1.Handle);
engine.SetHDevOperators(MyHDevOperatorImpl);
return true;
}
public void loadengine()
{
try
{
HDevProgram program = new HDevProgram(programPath);
programCall = new HDevProgramCall(program);
}
catch { }
}
public void disposeengine()
{
try
{
programCall.Dispose();
}
catch { }
}
public void inspectengine()
{
try
{
programCall.Execute();
}
catch { }
}
}
}halcon代码如下，只是简单的画了一个圆。
px:=280 py:=300 r:=200 xary:=[] yary:=[] step:=2 for Index := 0 to 360/step by step x:=px+px/2*cos(rad(step*Index+step)) y:=py+py/2*sin(rad(step*Index+step)) xary[Index/step]:=x yary[Index/step]:=y disp_polygon(200000, xary, yary) endfor
勇哥2020/8/24注：
我后来写了一个系列的贴子来讲解怎么样调用halcon引擎，请参考：
halcon引擎学习笔记（七）在在HDevEngine/Ｃ#中使用实时编译器JIT
halcon引擎学习笔记（六）多线程并发执行外部函数，多窗口显示
halcon引擎学习笔记（二）执行Procedure程序，扩展名为hdvp的halcon函数
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作者：hackpig
来源：www.skcircle.com
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