诸位朋友,如何用setxdata 方法删除实体扩展数据?

lgtq · 发表于 2006-3-10 21:15:00

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 · 发表于 2006-3-10 21:26:00

我 pRb->...type=1001也试过不行.

chengxdong · 发表于 2006-7-20 20:23:00

我试过,可以的.
pRb->restype=1001;
pTemp = pRb;
pTemp->rbnext=NULL;
pObj->setXData(pRb)

pipilu · 发表于 2006-7-25 16:37:00

//----------------------------------------------------------------------------------------------------
// created: 22/7/2006 17:53 ShangHai
// author: &nbspiPi
// 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()