CAD创建一个新的图形文件

	static void linea(void)
	{
		AcDbDatabase *pDb = new AcDbDatabase(true, false);
		AcGePoint3d pickPoint;
		AcGePoint3d p1(0, 0, 0);
		AcGePoint3d p2(100, 100, 0);
		AcDbLine *line = new AcDbLine(p1, p2);
		AcDbBlockTable *pBt = NULL;
		acdbHostApplicationServices()->workingDatabase()->getBlockTable( pBt,AcDb::kForRead);
		AcDbBlockTableRecord *pBtr = NULL;
		pBt->getAt(ACDB_MODEL_SPACE, pBtr, AcDb::kForWrite);
		AcDbObjectId lineId,pTextId;
		struct resbuf *Xdata = acutBuildList(AcDb::kDxfRegAppName, "test",
			AcDb::kDxfXdAsciiString, TEXT("字符串测试数据"),
			AcDb::kDxfXdInteger32, 2,
			AcDb::kDxfXdReal, 3.14,
			AcDb::kDxfXdWorldXCoord, asDblArray(pickPoint),
			RTNONE);
		line->setXData(Xdata);
		pBtr->appendAcDbEntity(lineId, line);
		AcDbText *pText = new AcDbText(p1, "xiongzhihui");
		pBtr->appendAcDbEntity(pTextId, pText);
		CString name = "C:\\123.dwg";
		acutPrintf(_T(name));
		pDb->saveAs(name);
		pBt->close();
		pBtr->close();
		line->close();
		pText->close();
		delete pDb;