如何创建一个ObjectArx程序

(1) 选择菜单命令【Project】→【Settings…】，d出“Project Settings”对话框。

(2) 在“Project Settings”对话框中选择“Setting For:”下拉列表的“All Configurations”项。

(3) 在“Project Settings”对话框中选择“C/C++”选项卡。

(4) 在“Category：”下拉列表中选择“Code Generation”项。然后选中“Use run-time library”下拉列表中的“Multithreaded DLL”选项（如图38-6所示）。再在“Category：”下拉列表框中选择“Preprocessor”项，然后在“Preprocessor definitions：”编辑框中内容的后面添加“ACRXAPP，RADPACK”，表示需要预链接的库（如图38-7所示）。

(5) 在“Project Settings”对话框中选择“Link”选项卡。

(6) 在“Category：”下拉列表中选择“General”项，然后在“Output file name：”编辑框中键入应用程序名“.\HelloARX.arx”（图38-8）；在“Object/library modules：”编辑框中添加“acutil15.lib acrx15.lib acdb15.lib acedapi.lib rxapi.lib acad.lib acge15.lib”；在“Category：”下拉列表框中选择“Output”项，然后在“Base address：”编辑框中键入“0x1c000000”（图38-9）。

(7) 完成上述步骤后，单击OK按钮确定设置。

Step 6 编译和建立ARX程序

选择菜单命令【Build】→【Build HelloARX】，编译和建立Hello.arx程序。

Step 7 加载并运行首汪ARX程序

(1) 在AutoCAD 2002环境中，选择菜单命令【Tools（工具）】→【Load Application…（加载应用程序带乱）】，d出“Load/Unload Applications（加载/卸载应用程序）”对话框。

(2) 选中“Hello.arx”文件，单击Load...按钮。

(3) 单击Close按钮返回AutoCAD主窗口。

(4) 在命令行中输入命令“Hello”，将在命令行中出现“Hello, Object ARX!”。蠢芹档

(5) 如果需要卸载程序，则再d出“Load/Unload Applications（加载/卸载应用程序）”对话框，如图38-10所示。在“Loaded Applications（已加载应用程序）”选项卡内选择“Hello.ARX”程序，单击Unload按钮，则该程序被卸载。

使用ARX的向导创建一个ARX项目，增悄岁加一个命令，在命令函数中实现如下代码即可启蔽睁。

void ShowARCInfo()

{

ads_point adsPt

ads_name entName

AcDbObjectId entId

AcDbEntity* pEnt

if(acedEntSel(_T("\n请选择圆或圆弧或<退出>:"), entName, adsPt) != RTNORM)

return FALSE

acdbGetObjectId(entId, entName)

if (acdbOpenObject(pEnt, entId, AcDb::kForRead) != Acad::eOk)

return FALSE

if(pEnt->isKindOf(AcDbArc::desc()) || pEnt->isKindOf(AcDbCircle::desc()))

{

AcDbArc* pArc = (AcDbArc*)pEnt

double dR = pArc->radius()

AcGePoint3d ptCen = pArc->center()

double dStartAngle = pArc->startAngle()

double dEndAngle = pArc->endAngle()

// 下面将上面的参数传递到对话框中显示即可。

...

}

else

{

ads_printf(_T("\n所选实体并非是圆并局或圆弧!"))

}

pEnt->close()

}

你自己已经解决了

这样就可以了，

void CAddBlock::OnOK()

{

CDialog::OnOK()

//获得要插入的块名

CString blockname

m_listctrl.GetLBText(m_listctrl.GetCurSel(),blockname)

//blockname = "CHART-20"

//寻找是否已经定义

AcDbDatabase *pCurDb = acdbHostApplicationServices()->workingDatabase()

AcDbBlockTable *pBlkTable

AcDbObjectId blockId

pCurDb->getBlockTable(pBlkTable, AcDb::kForRead)

if(!pBlkTable->has(blockname))

{

pBlkTable->close()

AcDbDatabase *pDwg =new AcDbDatabase (Adesk::kFalse)

char dir[MAX_PATH]

GetModuleFileName(NULL,dir,MAX_PATH)

dir[CString(dir).ReverseFind('\')]='\0'

//AfxMessageBox(CString(dir)+"\\survingpack\\"+blockname+".dwg")

pDwg->readDwgFile (CString(dir)+"段隐毁\\survingpack\\"+blockname+".dwg")

Acad::ErrorStatus es = pCurDb->insert (blockId, blockname, pDwg)//, Adesk::kFalse) //

delete pDwg

if ( es != Acad::eOk )

{

acutPrintf ("\n插入块错误携厅.")

return

}

}

else

pBlkTable->getAt(blockname, blockId)

BeginEditorCommand()

//ShowWindow(SW_HIDE)

ads_point pt={0,0,0}

int rc=acedGetPoint(NULL,"\n选择插入点:",pt)

if (rc==RTCAN||rc==RTNONE)

{

acutPrintf("\n*取消了插入 *** 作*")

CancelEditorCommand()

return

}

CompleteEditorCommand()

//---- 设置插入点，旋转角度，比例等等

AcDbBlockReference *pBlkRef =new AcDbBlockReference(AcGePoint3d(pt[0],pt[1],pt[2]),blockId)

//pBlkRef->setBlockTableRecord (blockId)

pBlkRef->握备setScaleFactors(AcGeScale3d(m_scale,m_scale,1))

//pBlkRef->setPosition(AcGePoint3d(pt[0],pt[1],pt[2]))

pBlkRef->setRotation (m_angle)

pBlkRef->setLayer(NULL)//设置图层

//获得模型空间块表记录

AcDbBlockTable *pBlockTable

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

AcDbBlockTableRecord *pBlockTableRecord

pBlockTable->getAt (ACDB_MODEL_SPACE, pBlockTableRecord,AcDb::kForWrite)

pBlockTable->close ()

pBlockTableRecord->appendAcDbEntity(pBlkRef)

//获得属性

AcDbBlockTableRecord *pBlkDefRecord

acdbOpenObject(pBlkDefRecord, blockId, AcDb::kForRead)

if(pBlkDefRecord->hasAttributeDefinitions())

{

//AcDbObjectIterator* pBlkIterator = pBlkRef->attributeIterator()//修改

AcDbBlockTableRecordIterator *pIterator

pBlkDefRecord->newIterator(pIterator)

for(pIterator->start()!pIterator->done()pIterator->step())

{

AcDbEntity *pEnt

pIterator->getEntity(pEnt, AcDb::kForRead)

AcDbAttributeDefinition *pAttDef = AcDbAttributeDefinition::cast(pEnt)

if(pAttDef != NULL &&!pAttDef->isConstant())

{

AcDbAttribute* pAtt = new AcDbAttribute()

pAtt->setPropertiesFrom(pAttDef)

pAtt->setInvisible( pAttDef->isInvisible() )

pAtt->setHorizontalMode(pAttDef->horizontalMode())

pAtt->setVerticalMode(pAttDef->verticalMode())

/* AcGePoint3d basePt = pAttDef->position()

basePt[0]+=pt[0]

basePt[1]+=pt[1]

basePt[2]+=pt[2]

pAtt->setPosition(basePt)

*/

AcGePoint3d basePt = pAttDef->alignmentPoint()

basePt[0]+=pt[0]

basePt[1]+=pt[1]

basePt[2]+=pt[2]

pAtt->setAlignmentPoint(basePt)

pAtt->setHeight(pAttDef->height())

pAtt->setTextStyle(pAttDef->textStyle())

pAtt->setTag(pAttDef->tag())

pAtt->setTextString(m_attrib)

pAtt->setFieldLength(25)

pBlkRef->appendAttribute(pAtt)

pAtt->close()

pEnt->close()

}

}

delete pIterator

}//end if pBlkDefRecord->hasAttributeDefinitions

pBlkDefRecord->close()

pBlockTableRecord->close()

pBlkRef->close()

}

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