[混合编程] C++/CLI与C#托管代码与非托管代码的混编

萧闫子 · 发表于 2014-1-8 16:22:27

ObjectArx编程论坛忽悠悠原创
1,首先在解决方案中建立一个C#项目,用来注册命令
2,然后建立一个C++类库,用来实现托管代码与Arx非托管代码的衔接.具体的设置方法如下:
在项目属性中添加引用acdbmgd和acmgd,并且添加对应Arx版本的lib和inc目录
然后在Stdafx.h中添加如下代码

#include <Windows.h>
#include "arxHeaders.h"
#include "mgdinterop.h"
添加一个新类DrawLine,用来绘制一条直线,代码如下

#pragma once
using namespace System;
using namespace System::Diagnostics;
using namespace System::Collections;
using namespace System::Text;
using namespace System::Runtime::InteropServices;
using namespace Autodesk::AutoCAD::ApplicationServices;
using namespace Autodesk::AutoCAD::Runtime;
using namespace Autodesk::AutoCAD::DatabaseServices;
using namespace Autodesk::AutoCAD::EditorInput;
using namespace Autodesk::AutoCAD::Geometry;
namespace Tools {
public ref class DrawLine
{
public:
static ObjectId Draw(Point3d ptS, Point3d ptE)
{
AcGePoint3d gePtS, gePtE;
gePtS = GETPOINT3D(ptS);
gePtE = GETPOINT3D(ptE);
AcDbLine *pLine = new AcDbLine(gePtS, gePtE);
AcDbObjectId objId = AcDbObjectId::kNull;
if (AppendEntity(pLine, objId))
{
pLine->close();
return ToObjectId(objId);
}
else
{
return ObjectId::Null;
}
}
private:
//将实体加入模型空间
static bool AppendEntity(AcDbEntity *pEnt,AcDbObjectId& objId)
{
bool bValue=true;
AcDbBlockTable *pBlockTable;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pBlockTable, AcDb::kForRead);
AcDbBlockTableRecord *pBlockTableRecord;
pBlockTable->getAt(ACDB_MODEL_SPACE, pBlockTableRecord, AcDb::kForWrite);
pBlockTable->close();
if ( Acad::eOk != pBlockTableRecord->appendAcDbEntity(objId, pEnt) ) bValue=false;
pBlockTableRecord->close();
return bValue;
}
};