[转帖]选集关建字的使用

Gdlprfcu

[pcode=cpp,true]
void MyCustomCommand()

{

  // save the old callback function

  resbuf* (*oldFunc) (const ACHAR*);

  acedSSGetKwordCallbackPtr(&oldFunc);



  // set own callback function

  acedSSSetKwordCallbackPtr(ssCallback);



  // let the user make a selection

  ads_name ss;

  // this is the keyword list

  // to use local and global keywords:

  ACHAR kwordlist[] = { _T("LInes CIRcles _ LInes CIRcles") };



  if (RTNORM != acedSSGet(_T("_:K"), NULL, kwordlist, NULL, ss)) {

    // cancel

  } else {

    acutPrintf(_T("\nDone."));

    acedSSFree(ss);

  }

  // restore old callback function

  acedSSSetKwordCallbackPtr(*oldFunc);

}

Now the callback that is executed when the keyword is selected:


// Callback function for acedSSGet()

resbuf* ssCallback(const TCHAR* kword)

{

  // kword contains the global keyword

  acutPrintf(_T("\nCallback: '%s'"), kword);



  // result to return

  // NULL: no changes on selection set

  resbuf *result = NULL;



  if (!wcscmp(kword, _T("LInes"))) {

    // select all lines (just for testing)

    AcDbObjectIdArray objIds;

    getLines(objIds);

    // create resbuf containing single

    // enames from object id array

    result = getResbuf(objIds);

  } else if (!wcscmp(kword, _T("CIRcles"))) {

    // select all circles (just for testing)

    AcDbObjectIdArray objIds;

    getCircles(objIds);

    // create resbuf containing a selection set

    ads_name ss;

    acedSSGet(_T("X"), NULL, NULL,

      acutBuildList(RTDXF0, _T("CIRCLE"), RTNONE),

      ss);

    result = acutBuildList(RTPICKS, ss, RTNONE);

  } else {

    // return an error message

    result = acutBuildList(RTSTR, _T("\nUnknown error"), RTNONE);

  }

  return result;

}

And finally some additional methods for this specific sample:


resbuf* getResbuf(AcDbObjectIdArray ids)

{

  resbuf *result = NULL, *temp1, *temp2;

  ads_name ename;

  int length = ids.length();



  for (int i = 0; i < length; ++i) {

    acdbGetAdsName(ename, ids);

    temp2 = acutBuildList(RTENAME, ename, RTNONE);

    if (result == NULL) {

      result = temp2;

    } else {

      temp1->rbnext = temp2;

    }

    temp1 = temp2;

  }



  return result;

}



void getLines(AcDbObjectIdArray& ids)

{

  // select all lines from model space

  // (without any error checking)

  AcDbBlockTable *pTable;

  AcDbBlockTableRecord *pModelSpace;

  AcDbBlockTableRecordIterator *pIter;

  AcDbEntity* pEnt;



  acdbHostApplicationServices()->workingDatabase()->

    getBlockTable(pTable, AcDb::kForRead);

  pTable->getAt(ACDB_MODEL_SPACE, pModelSpace, AcDb::kForRead);

  pTable->close();

  pModelSpace->newIterator(pIter);

  pModelSpace->close();



  for (; !pIter->done(); pIter->step()) {

    pIter->getEntity(pEnt, AcDb::kForRead);

    if (pEnt->isKindOf(AcDbLine::desc()))

      ids.append(pEnt->objectId());

    pEnt->close();

  }



  delete pIter;

}



void getCircles(AcDbObjectIdArray& ids)

{

  // select all circles from model space

  // (without any error checking)

  AcDbBlockTable *pTable;

  AcDbBlockTableRecord *pModelSpace;

  AcDbBlockTableRecordIterator *pIter;

  AcDbEntity* pEnt;



  acdbHostApplicationServices()->workingDatabase()->

    getBlockTable(pTable, AcDb::kForRead);

  pTable->getAt(ACDB_MODEL_SPACE, pModelSpace, AcDb::kForRead);

  pTable->close();

  pModelSpace->newIterator(pIter);

  pModelSpace->close();



  for (; !pIter->done(); pIter->step()) {

    pIter->getEntity(pEnt, AcDb::kForRead);

    if (pEnt->isKindOf(AcDbCircle::desc()))

      ids.append(pEnt->objectId());

    pEnt->close();

  }



  delete pIter;

}
[/pcode]

ScmTools

很好的教学贴，希望后续能够看到LZ更加精彩的贴

why1025

原来ssget关键字使用已经有帖子了:'(:'(:'(:'(:'(