循环访问表

以下示例中的代码创建一个迭代器，用于遍历线型表中的符号表记录。它获取每条记录，将其打开以供读取，获取线型名称，关闭记录，然后打印线型名称。最后，程序删除迭代器。

void
iterateLinetypes()
{
    AcDbLinetypeTable *pLinetypeTbl;
    acdbHostApplicationServices()->workingDatabase()
        ->getSymbolTable(pLinetypeTbl, AcDb::kForRead);
    // Create a new iterator that starts at table
    // beginning and skips deleted.
    //
    AcDbLinetypeTableIterator *pLtIterator;
    pLinetypeTbl->newIterator(pLtIterator);
    // Walk the table, getting every table record and
    // printing the linetype name.
    //
    AcDbLinetypeTableRecord *pLtTableRcd;
    char *pLtName;
    for (; !pLtIterator->done(); pLtIterator->step()) {
        pLtIterator->getRecord(pLtTableRcd, AcDb::kForRead);
        pLtTableRcd->getName(pLtName);
        pLtTableRcd->close();
        acutPrintf("\nLinetype name is:  %s", pLtName);
        free(pLtName);
    }
    delete pLtIterator;
    pLinetypeTbl->close();
}