Acad::ErrorStatus createBlockRecord(/*[in]*/const char* name)
{
AcDbCircle* pFace = NULL;
AcDbCircle* pLeftEye = NULL;
AcDbCircle* pRightEye = NULL;
AcDbArc* pMouth = NULL;
AcDbBlockTable* pBlockTable = NULL;
AcDbBlockTableRecord* pBlockTableRecord = NULL;
try
{
// First, check if a block of the same name already exists
// by verifying in the current database block table.
//
// Open the block table for read
//
ARXOK(acdbCurDwg()->getBlockTable(pBlockTable, AcDb::kForRead));
if (pBlockTable->has(name) == Adesk::kTrue)
{
pBlockTable->close();
return Acad::eDuplicateKey;
}
// Now we know the block does not exist, so we create it
// using the name passed in.
//
pBlockTableRecord = new AcDbBlockTableRecord();
if (!pBlockTableRecord)
throw Acad::eOutOfMemory;
pBlockTableRecord->setName(name);
// To keep it simple, we use the origin for the insertion point
//
pBlockTableRecord->setOrigin(AcGePoint3d::kOrigin);
// Open the block table for write
// since we are adding a new block definition
//
ARXOK(pBlockTable->upgradeOpen());
// Add the new block table record to the block table.
// For now, the block table record is empty.
//
ARXOK(pBlockTable->add(pBlockTableRecord));
pBlockTable->close();
pBlockTable = NULL;
// Now the block table record is in the database, but is empty
// (has no sub-entity).
// Note that after having been added to the database, an object or an entity
// is implicitely opened for write.
//
// So we create the sub entities to append to the block
// which will represent a "happy face":
// the block should consist of a round yellow face (circle)
// two blue eyes (circles) and a red mouth (arc)
//
pFace = new AcDbCircle(AcGePoint3d::kOrigin, AcGeVector3d::kZAxis, 1.0);
pLeftEye = new AcDbCircle(AcGePoint3d(0.33, 0.25, 0.0), AcGeVector3d::kZAxis, 0.1);
pRightEye = new AcDbCircle(AcGePoint3d(-0.33, 0.25, 0.0), AcGeVector3d::kZAxis, 0.1);
pMouth = new AcDbArc(AcGePoint3d(0, 0.5, 0), 1.0, PI + (PI * 0.3), PI + (PI * 0.7));
if (!pFace || !pLeftEye || !pRightEye || !pMouth)
{
delete pFace;
delete pLeftEye;
delete pRightEye;
delete pMouth;
throw Acad::eOutOfMemory;
}
// Set the color property.
//
pFace->setColorIndex(2);
pLeftEye->setColorIndex(5);
pRightEye->setColorIndex(5);
pMouth->setColorIndex(1);
ARXOK(pBlockTableRecord->appendAcDbEntity(pFace));
ARXOK(pBlockTableRecord->appendAcDbEntity(pLeftEye));
ARXOK(pBlockTableRecord->appendAcDbEntity(pRightEye));
ARXOK(pBlockTableRecord->appendAcDbEntity(pMouth));
pFace->close();
pLeftEye->close();
pRightEye->close();
pMouth->close();
pBlockTableRecord->close();
return Acad::eOk;
}
catch(const Acad::ErrorStatus es)
{
if(pBlockTable)
pBlockTable->close();
if(pBlockTableRecord)
// if the id is NULL, it means that the object
// is not in the database and that we can sefely delete it
if(pBlockTableRecord->objectId() == AcDbObjectId::kNull)
delete pBlockTableRecord;
else
{
pBlockTableRecord->erase();
pBlockTableRecord->close();
}
if(pFace)
if(pFace->objectId() == AcDbObjectId::kNull)
delete pFace;
else
pFace->close();
if(pLeftEye)
if(pLeftEye->objectId() == AcDbObjectId::kNull)
delete pLeftEye;
else
pLeftEye->close();
if(pRightEye)
if(pRightEye->objectId() == AcDbObjectId::kNull)
delete pRightEye;
else
pRightEye->close();
if(pMouth)
if(pMouth->objectId() == AcDbObjectId::kNull)
delete pMouth;
else
pMouth->close();
return es;
}
}
