关于拖动块的问题()

nc2t · 发表于 2006-8-23 10:40:00

我做了一个带属性定义的块表记录,和引用该块定义的块参照
当我使用AcEdJig拖动该块参照的时候会发现,在拖动的过程中,会出现在块中属性定义的tag中的字符串和块的图形一起出现.也随着块中的图形一起动
其实属性定义的tag值,应该只是该属性的一个标识,但是为什么在块定义中的这个标识,会在拖动的过程中出现啊?
比如:块中有个属性定义,该属性定义的tag = "标识",这样在拖动这个块的引用的同时,这个"标识"的字符也会随着图形一起动,其实应该不会出现这个字符串啊
这个问题郁闷我好几天了,请哪为朋友指点一下好么?

nc2t · 发表于 2006-8-30 10:50:00

这么长时间也没有人能解决这个问题么？看来只好使用一个变通的方法了，
pAttDef->setHeight(0.00001)把高度值设置为最小，这样就看不见了；不过我还是不甘心，要是哪位兄弟知道该怎么解决这个问题，请赐教！

nc2t · 发表于 2006-8-30 10:54:00

其实这个问题就是：在拖动一个块引用的过程中，怎样才能不显示"该块引用的那个块"中的属性定义的Tag字符串

shinjikun · 发表于 2006-8-30 15:48:00

属性和属性定义的问题:
class bjt:
public AcEdJig
{
AcGePoint3d mTo;
AcDbBlockReference* br;
public:
AcDbObjectId append()
{
  AcDbBlockTableRecord *btr;
  acdbOpenObject(btr,br->blockTableRecord(),kForRead);
  if(btr->hasAttributeDefinitions())
  {
AcDbBlockTableRecordIterator *it;
btr->newIterator(it);
for(;!it->done();it->step())
{
AcDbEntity *pEnt;
it->getEntity(pEnt, AcDb::kForRead);
// Make sure the entity is an attribute definition
// and not a constant.
//
AcDbAttributeDefinition *pAttdef = AcDbAttributeDefinition::cast(pEnt);
if (pAttdef != NULL && !pAttdef->isConstant())
{
   // We have a non-constant attribute definition,
   // so build an attribute entity.
   //
   AcDbAttribute *pAtt = new AcDbAttribute();
   pAtt->setPropertiesFrom(pAttdef);
   pAtt->setInvisible(pAttdef->isInvisible());
   // Translate the attribute by block reference.
   // To be really correct, the entire block
   // reference transform should be applied here.
   //
   AcGePoint3d basePoint = pAttdef->position();
   basePoint += br->position().asVector();
   pAtt->setPosition(basePoint);
   pAtt->setHeight(pAttdef->height());
   pAtt->setRotation(pAttdef->rotation());
   pAtt->setTag(pAttdef->tag());
   pAtt->setFieldLength(25);
   char *pStr = pAttdef->tag();
   pAtt->setTag(pStr);
   free(pStr);
   pAtt->setFieldLength(pAttdef->fieldLength());
   pAtt->setTextString("Assigned Attribute Value");
   br->appendAttribute(pAtt);
   pAtt->close();
}
pEnt->close();
}
delete it;
  }
  btr->close();
  return AcEdJig::append();
}
//////////////////////////////////////////////////////////////////////////
virtual DragStatus sampler()
{
  DragStatus stat;
  setUserInputControls((UserInputControls)
(AcEdJig::kAccept3dCoordinates
| AcEdJig::kNoNegativeResponseAccepted
| AcEdJig::kNoZeroResponseAccepted));
  static AcGePoint3d axisPointTemp;
  stat = acquirePoint(mTo);
  if (axisPointTemp != mTo)
axisPointTemp = mTo;
  else if (stat == AcEdJig::kNormal)
return AcEdJig::kNoChange;
  return stat;
}
//////////////////////////////////////////////////////////////////////////
virtual Adesk::Boolean  update()
{
  br->setPosition(mTo);
  return Adesk::kTrue;
}
//////////////////////////////////////////////////////////////////////////
virtual AcDbEntity* entity() const
{
  return br;
}
//////////////////////////////////////////////////////////////////////////
void start()
{
  br=0;
  AcDbBlockTable *bt;
  acdbHostApplicationServices()->workingDatabase()->getBlockTable(bt,kForRead);
  AcDbObjectId bid;
  try
  {
char text[1024];
if(RTNORM!=acedGetString(1,"input name",text))throw(0);
if (bt->getAt(text,bid)!=eOk)throw(0);
  }
  catch(...)
  {
bt->close();
return;
  }
  bt->close();
  br=new AcDbBlockReference(AcGePoint3d::kOrigin,bid);
  setDispPrompt("Jig a Block");
  drag();
  append();
}
};
另：
static void BlockJigTestnewJ(void)
{
  // Add your code for command BlockJigTest.newJ here
  bjt b;
  b.start();
}