常用選擇集使用及判斷實體類型

ARX中常用的選擇實體的函數有幾種：

1、acedSSGet

   相應的函數用到的函數有：acedSSLength 、acedSSName、acdbGetObjectId、acdbOpenAcDbEntity。。。acedSSFree

  使用此數函數，最後必須用acedSSFree釋放其選擇集內存。

2、acedEntSel

 

各自用法的源代碼如下：

1、acedssGet

ads_name ssName; if (acedSSGet(NULL,NULL,NULL,NULL,ssName) !=RTNORM) { acutPrintf("/n未選擇實體"); return; } Acad::ErrorStatus es; long ssLength; acedSSLength(ssName,&ssLength); for (int i=0; i<ssLength; i++) { //獲得指定元素的objectId ads_name ent; acedSSName(ssName,i,ent); AcDbObjectId objId; acdbGetObjectId(objId,ent); //獲得指向當前元素的指針 AcDbEntity *pEnt = NULL; es = acdbOpenAcDbEntity(pEnt,objId,AcDb::kForRead); if (es!= Acad::eOk) { return; } //如果是Text文字 if (pEnt->isKindOf(AcDbText::desc())) { AcDbText *pText = NULL; pText = AcDbText::cast(pEnt); CString text = pText->textString(); if (IsNumeric(text)) { CalcData temp; temp.textConent = text; temp.y = pText->position().y; temp.eld = pText->objectId(); strColArr.Add(temp); } pText->close(); } //如果是MText文字 if (pEnt->isKindOf(AcDbMText::desc())) { AcDbMText *pMText = NULL; pMText = AcDbMText::cast(pEnt); CString text = pMText->contents(); if (IsNumeric(text)) { CalcData temp; temp.textConent = text; temp.y = pMText->location().y; temp.eld = pMText->objectId(); strColArr.Add(temp); } pMText->close(); } pEnt->close(); } acedSSFree(ssName); 

2、acedEntSel

if (acedEntSel("/n選擇文字:",ssResult,ptName)!=RTNORM) { return; } AcDbObjectId resultId; es = acdbGetObjectId(resultId,ssResult); if (es != Acad::eOk) { return; } //獲得指向當前元素的指針 AcDbEntity *pEnt = NULL; es = acdbOpenAcDbEntity(pEnt,resultId,AcDb::kForWrite); if (es!= Acad::eOk) { return; } //如果是Text文字 if (pEnt->isKindOf(AcDbText::desc())) { AcDbText *pText = NULL; pText = AcDbText::cast(pEnt); pText->setTextString(CAcadFunc::DoubleToString(result,m_Dec)); pText->close(); } if (pEnt->isKindOf(AcDbMText::desc())) { AcDbMText *pMText = NULL; pMText = AcDbMText::cast(pEnt); pMText->setContents(CAcadFunc::DoubleToString(result,m_Dec)); pMText->close(); } pEnt->close();