ObjectArx学习笔记-画线

一、安装vs2005

二、安装AutoCAD2008

三、安装ObjectArx2008

四、建立第一个ObjectArx程序

1、首先用ObjectARX Commands添加一个命令

然后在acrxEntryPoint.cpp中生成如下代码：

ACED_ARXCOMMAND_ENTRY_AUTO(CArxProject1App, qxzyArxProject1, _MyCommand1, MyCommand1, ACRX_CMD_TRANSPARENT, NULL)

以及：

// - qxzyArxProject1._MyCommand1 command (do not rename)
	static void qxzyArxProject1_MyCommand1(void)
	{
	}

2、然后补充代码如下：

static void qxzyArxProject1_MyCommand1(void)
	{
		// Add your code for command qxzyArxProject1._MyCommand1 here
		AcGePoint3d startPt(60.0, 60.0, 0.0);
		AcGePoint3d endPt(100.0, 200.0, 0.0);
		AcDbLine *pLine = new AcDbLine(startPt, endPt);

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

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

		AcDbObjectId lineId;
		pBlockTableRecord->appendAcDbEntity(lineId, pLine);
		pBlockTableRecord->close();
		pLine->close();
	}

编译，最后会在项目文件的\Visual Studio 2005\Projects\ArxProject1\win32\debug中生成qxzyArxProject1.arx文件

3、打开AutoCAD2008选择“工具|加载应用程序”，选择上面生成的qxzyArxProject1.arx文件，然后在命令窗口输入MyCommand1，点击回车，效果如下：