Wblock

AcDbObjectId CopyBlockDefFromOtherDwg(const TCHAR* fileName,
const TCHAR* blkDefName)
{
AcDbObjectId blockRefId = AcDbObjectId::kNull;
//AcDbObjectId :: kNull表示当前DWG中不存在对象(图层)

//使用_SH_DENYNO参数打开图形(只读打开),允许其他用户读写文件
AcDbDatabase* pSourceDwg = new AcDbDatabase(false);
Acad::ErrorStatus es = pSourceDwg->readDwgFile(fileName,
static_cast<AcDbDatabase::OpenMode>(_SH_DENYNO));
if (es != Acad::eOk)
{
delete pSourceDwg;
pSourceDwg = NULL;

acutPrintf(TEXT("\n读入dwg图形错误，图形名称:%s"), fileName);
return blockRefId;
}

//打开外部图形数据库的块表,寻找给定名称的块表记录
AcDbBlockTable* pBlkTable = NULL;
es = pSourceDwg->getBlockTable(pBlkTable, AcDb::kForRead);
//以只读模式打开数据库的块表,pBlkTable获得块表地址
assert(es == Acad::eOk);
bool bRet = false;

if (pBlkTable->has(blkDefName)) //不存在指定的图块
{
AcDbObjectId destBlkDefId; //指定图块的块表记录Id
es = pBlkTable->getAt(blkDefName, destBlkDefId);

//把指定的图块输出到一个临时的图形数据库
AcDbDatabase *pTempDb = NULL; //注意:这里千万不能new
es = pSourceDwg->wblock(pTempDb, destBlkDefId);//创建一个新的数据库对象，pTempDb指向它
assert(es == Acad::eOk);

//把临时图形数据库作为插入块插入到当前dwg
AcDbDatabase* pCurDb = acdbHostApplicationServices()->workingDatabase();
es = pCurDb->insert(blockRefId, blkDefName, pTempDb);//由pDb指向的数据库中的所有
//模型空间实体都被复制到新的块表记录中,新的块表记录名称为blkDefName,Id为blockRefId
assert(es == Acad::eOk);
delete pTempDb;
pTempDb = NULL;
}
else
{
acutPrintf(TEXT("\n给定的DWG文件中，不存在指定名称的块表记录."));
}
pBlkTable->close();

delete pSourceDwg;
pSourceDwg = NULL;

return blockRefId;
}