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[讨论]我想把模型空间的直线替换成自己的~~代码注释很清楚，望高手走过时顺便指点一下啊[br] //获得当前数据库的快表
AcDbBlockTable *pBlockTbl;
acdbHostApplicationServices()->workingDatabase()->getBlockTable(pBlockTbl,AcDb::kForRead );
//获得模型空间的块表记录
AcDbBlockTableRecord *pBlockTblRcd;
pBlockTbl->getAt (ACDB_MODEL_SPACE,pBlockTblRcd,AcDb::kForWrite);//原本是read格式
pBlockTbl->close();//已经关闭啦
//创建快表记录遍历器
AcDbBlockTableRecordIterator *pltr;
pBlockTblRcd->newIterator (pltr);
AcDbEntity *pEnt;//遍历的临时实体指针。
unsigned int No_Line;//多少条直线
No_Line=0;
//第一次 遍历只为获得直线的数目即 No_Line
for (pltr->start ();!pltr->done();pltr->step())
{
pltr->getEntity (pEnt,AcDb::kForWrite );
AcDbLine *pLine=AcDbLine::cast(pEnt);//淘出直线
if (pLine!=NULL)
{
No_Line=No_Line+1;//遇到直线就加1.
pLine->close();//这里忘关
}
pEnt->close();
}
}
//及时删除遍历
delete pltr;
//有点生疏的动态数组
/* AcDbLine **pLines;
pLines=new AcDbLine*[No_Line];*/
typedef AcDbLine* AcDbLinePointer;
AcDbLinePointer *pLines=new AcDbLinePointer[No_Line];//小梁
////将直线的信息 放到新建的动态数组
unsigned int No_Line_Tmp;
No_Line_Tmp=0;
AcDbObjectId pLines_ID;//临时保存实体用的ID
//第二次 遍历为了将直线的信息放入到动态数组
AcDbBlockTableRecordIterator *pltr1;
pBlockTblRcd->newIterator (pltr1);
for (pltr1->start ();!pltr1->done ();pltr1->step())
{
pltr1->getEntity(pEnt,AcDb::kForWrite );//这里是写的模式
AcDbLine *pLine=AcDbLine::cast(pEnt);//淘出直线
if (pLine!=NULL)
{
//新建一条直线
pLines[No_Line_Tmp]->startPoint() =pLine->startPoint ();
pLines[No_Line_Tmp]->endPoint() =pLine->endPoint ();
//删除老线，换成新线。
pLine->erase ();
//及时关闭pLine
pLine->close();
//pBlockTblRcd->appendAcDbEntity(pLines_ID,pLines[No_Line_Tmp]); //遍历时不要添加 否则死循环。
No_Line_Tmp=No_Line_Tmp+1;//序号加一。
/* pLines[No_Line_Tmp]->close ();
*/
}
pEnt->close();
}
delete pltr1;//删除遍历器
pBlockTblRcd->close();
delete[] pLines;//删除动态数组。
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