CAD 2020 ARX C++ 开发配置

CAD 2020 ARX C++ 配置

安装SDK

• 下载ObjectArx文件：objectarx_for_autocad_2020_win_64_bit.sfx.exe；
• 安装到指定目录，即进行了解压；

安装模板

• 下载模板向导安装包：ObjectARXWizard2020.msi
• 安装，即使配置正确的SDK路径，但模板依旧是使用默认路径；

异常与修复

• 导致搭配vs 2017使用会出现找不到正确SDK的异常；

无法读取项目文件"ArxProject1.vcxproj"。
F:\dev-tool\(cad\Projects\ArxProject1\ArxProject1\Autodesk.arx-2020.props(37,3)
:未找到导入的项目“C:\ObjectARX\inc\arx.props"。请确认 <Import>声明中的路径正确，且磁盘上存在该文件。

• RTCc异常；

错误	C2338	/RTCc rejects conformant code, so it isn't supported by the C++ Standard Library. 
Either remove this compiler option, or define _ALLOW_RTCc_IN_STL to acknowledge that you have received this warning.	
test1	D:\Apps\win-dev\vs\Visual Studio 2017 Enterprise\VC\Tools\MSVC\14.10.25017\include\yvals.h	182	

修复找不到正确SDK

• 找到模板向导安装路径：C:\Program Files (x86)\Autodesk\ObjectARX 2020 Wizards\ArxAppWiz\Templates\1033；
• 修改Autodesk.arx-2020.props中的条目值，使得指向SDK的真实目录；

<!--修改前-->
<ArxSdkDir>C:\ObjectARX\</ArxSdkDir>
<!--修改后-->
<ArxSdkDir>F:\dev-tool\cad\ObjectARX2020\</ArxSdkDir>

修复RTCc异常

• 项目中右键-属性-配置属性-C/C++-预处理器，在[预处理定义]中加入

_ALLOW_RTCc_IN_STL

• 重新编译后，异常消失。

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SDK下载连接

版本	链接
2025	https://damassets.autodesk.net/content/dam/autodesk/files/esd/objectarx/2025/objectarx-for-autocad-2025-win-64bit-dlm.sfx.exe
2024	https://damassets.autodesk.net/content/dam/autodesk/files/esd/objectarx/2024/objectarx-for-autocad-2024-win-64bit-dlm.sfx.exe
2023	https://damassets.autodesk.net/content/dam/autodesk/files/objectarx/ObjectARX_for_AutoCAD_2023_Win_64bit_dlm.sfx.exe
2022	https://download.autodesk.com/esd/objectarx/2022/objectarx_for_autocad_2022_win_64bit_dlm.sfx.exe
2021	https://download.autodesk.com/esd/objectarx/2021/objectarx_for_autocad_2021_win_64bit_dlm.sfx.exe
2020	http://download.autodesk.com/esd/objectarx/2020/objectarx_for_autocad_2020_win_64_bit.sfx.exe

参考https://blog.csdn.net/u010150437/article/details/88965274

开发环境

版本	开发环境
2024	Visual Studio 2022 version 17.2.6
2023	Visual Studio 2019 version 16.11.5
2022	Visual Studio 2019 version 16.7
2021	Visual Studio 2019 (v16.0)
2019-2020	Visual Studio 2017 with Update 2
2018	Visual Studio 2015 with Update 3
2017	Visual Studio 2015 with Update 1
2015-2016	Visual Studio 2012 with Update 4

一个栗子

#include "StdAfx.h"
#include "resource.h"
#include "tchar.h"
#include <aced.h>
#include <dbents.h>
//...
	static void TESTDrawPolyline()
	{
		TCHAR prompt[256];
		AcGePoint3d basePt, prevPt;
		AcGePoint3dArray ptArray;

		int ret = acedGetPoint(NULL, _T("\n指定折线起点: "), asDblArray(basePt));
		if (ret != RTNORM)
		{
			acutPrintf(_T("\n命令取消！"));
			return;
		}
		ptArray.append(basePt);
		prevPt = basePt;

		while (true)
		{
			_stprintf_s(prompt, _T("\n指定下一点 [回车完成]: "));
			ret = acedGetPoint(asDblArray(prevPt), prompt, asDblArray(basePt));

			if (ret == RTNONE || ret == RTCAN) // 回车或者ESC退出循环
				break;
			if (ret != RTNORM)
				continue;

			ptArray.append(basePt);
			prevPt = basePt;
		}

		if (ptArray.length() < 2)
		{
			acutPrintf(_T("\n至少需要两个点！"));
			return;
		}

		AcDbPolyline* pPoly = new AcDbPolyline();
		for (int i = 0; i < ptArray.length(); i++)
		{
			AcGePoint2d pt2d(ptArray[i].x, ptArray[i].y);
			pPoly->addVertexAt(i, pt2d, 0.0, 0.0, 0.0);
		}

		pPoly->setElevation(ptArray[0].z);

		AcDbBlockTable* pBlockTable;
		acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTable, AcDb::kForRead);

		AcDbBlockTableRecord* pModelSpace;
		pBlockTable->getAt(ACDB_MODEL_SPACE, pModelSpace, AcDb::kForWrite);
		pBlockTable->close();

		AcDbObjectId polyId;
		pModelSpace->appendAcDbEntity(polyId, pPoly);
		pModelSpace->close();

		pPoly->close();

		acutPrintf(_T("\n折线绘制成功！共 %d 个顶点"), ptArray.length());
	}
//...
ACED_ARXCOMMAND_ENTRY_AUTO(Ctest1App, TEST, DrawPolyline, DPL, ACRX_CMD_MODAL, NULL)

更多

https://github.com/HexTTX/ObjectARX-SDK/tree/master

更新记录

• 2026.8.10 于佛山市禅城区祖庙街道，季华五路附近