[ARX程序]：如何改变已经存在的层颜色

yinyan168

我想改变一个已经存在的层的颜色，这样为什么不行啊。请高手指点啊。谢谢。
acdbHostApplicationServices()->workingDatabase()
        ->getSymbolTable(pLayerTable,AcDb::kForWrite);
AcDbLayerTableIterator *pLayerTableIterator;
pLayerTable->newIterator(pLayerTableIterator);
AcDbLayerTableRecord *pLayerTableRecord;
pLayerTableIterator->seek(RecordId);//RecordId是存在层的AcDbObjectId值，已经赋值
pLayerTableIterator->getRecord(pLayerTableRecord,AcDb::kForWrite);
AcCmColor color;
color.setColorIndex(colorIndex);
pLayerTableRecord->setColor(color);