調用halcon引擎有兩個直接的好處：
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避免C# 與halcon代碼混編時可能產生的內存泄露問題
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修改halcon程序時不用重新編譯C#?
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勇哥寫了一個示例，詳細的應用感受和缺點限制勇哥會持續做相關的總結給大家分享。
對于halcon17來說，要運行下面的程序，你要引用
C#
halcondotnet.dll
hdevenginedonet.dll?
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C#
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 { }}}
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halcon代碼如下，只是簡單的畫了一個圓。
C#
px:=280
py:=300
r:=200xary:=[]
yary:=[]
step:=2
for Index := 0 to 360/step by stepx:=px+px/2*cos(rad(step*Index+step))y:=py+py/2*sin(rad(step*Index+step))xary[Index/step]:=xyary[Index/step]:=ydisp_polygon(200000, xary, yary)
endfor)
