菜鸟求助：如何绘制一条直线！

robinsom

初学ARX，想从最基本的学起，但是连绘制一条直线的原代码也找不到，求大侠们帮忙！
小弟在这里拜谢了！

cag

AcDbObjectId
createLine()
{
AcGePoint3d startPt(-2.4, 0.0, 0.0);
AcGePoint3d endPt(2.4, 0.0, 0.0);
AcDbLine *pLine = new AcDbLine(startPt, endPt); AcDbBlockTable *pBlockTable;
acdbHostApplicationServices()->workingDatabase()
->getSymbolTable(pBlockTable, AcDb::kForRead); AcDbBlockTableRecord *pBlockTableRecord;
pBlockTable->getAt(ACDB_MODEL_SPACE, pBlockTableRecord,
AcDb::kForWrite);
pBlockTable->close(); AcDbObjectId lineId;
pBlockTableRecord->appendAcDbEntity(lineId, pLine); pBlockTableRecord->close();
pLine->close(); return lineId;
}

robinsom

谢谢了，有了你的帮助可以开始我的进一步的学习了