诸位朋友,如何 用setxdata 方法删除实体扩展数据?

lgtq

 我是这样做的,但是错了....

我调了一晚上,郁闷的很.

 void clearname(AcDbPolyline* pPolyline)
{ struct  resbuf  *pRb=NULL;
 pPolyline->upgradeOpen();
 pPolyline->setXData(pRb);
 pPolyline->close();
 acutRelRb(pRb);
}

lgtq

我 pRb->...type=1001也试过 不行.

chengxdong

我试过,可以的. 

  pRb->restype=1001;
   pTemp = pRb;
   pTemp->rbnext=NULL;

pObj->setXData(pRb)

pipilu

//----------------------------------------------------------------------------------------------------
// created: 22/7/2006   17:53   ShangHai
// author:  iPi 
// purpose: Delete X-Data of a entity, no matter if there is X-Data attached to the entity
//              when we fail to store a flange,but some information has already been added as x data,
//              we need to delete these x data for consistency
//----------------------------------------------------------------------------------------------------
bool DelXData(AcDbObjectId adoiEntity)
{
    //Open the entity for editing
    AcDbEntity *padEntity;
    if (acdbOpenAcDbEntity(padEntity, adoiEntity, AcDb::kForWrite) != Acad::eOk) {
        return false;
    }//end if

    //Get x data result buffer of the entity
    resbuf *rbXdata = padEntity->xData(NULL);

    //result buffer not null
    if (rbXdata) {
        rbXdata->rbnext = NULL;
        padEntity->setXData(rbXdata);
        acutRelRb(rbXdata);
    }//end if

    padEntity->close();

    return true;

}//end of function : DelXData()

fuzhishui

pipilu 发表于 2006-7-25 16:37
//-------------------------------------------------------------------------------------------------- ...

兄弟   太谢谢你了