ObjectArx学习笔记-导入导出图层列表

导出图层的实现：

static void qxzyOperateLayer_ExportLayer(void)
	{
		CStdioFile f;
		CFileException e;
		char *pFileName = "C:\\layers.txt";
		if(!f.Open((LPCTSTR)pFileName, CFile::modeCreate|CFile::modeWrite, &e))
		{
			acutPrintf(_T("\n创建导出文件失败！"));
			return;
		}

		AcDbLayerTable *pLayerTbl;
		AcDbLayerTableRecord *pLayerTblRcd;
		acdbHostApplicationServices()->workingDatabase()
			->getLayerTable(pLayerTbl, AcDb::kForRead);

		AcDbLayerTableIterator *pItr;
		pLayerTbl->newIterator(pItr);
		for(pItr->start();!pItr->done();pItr->step())
		{
			pItr->getRecord(pLayerTblRcd, AcDb::kForRead);

			CString strLayerInfo;
			ACHAR *layerName;
			pLayerTblRcd->getName(layerName);
			strLayerInfo = layerName;
			free(layerName);
			strLayerInfo += ",";

			CString strColor;
			AcCmColor color = pLayerTblRcd->color();
			strColor.Format(_T("%d"), color.colorIndex());
			strLayerInfo += strColor;
			strLayerInfo += ",";

			CString strLinetype;
			AcDbLinetypeTableRecord *pLinetypeTblRcd;
			acdbOpenObject(pLinetypeTblRcd, pLayerTblRcd->linetypeObjectId(),
				AcDb::kForRead);
			ACHAR *linetypeName;
			pLinetypeTblRcd->getName(linetypeName);
			pLinetypeTblRcd->close();
			strLinetype = linetypeName;
			free(linetypeName);
			strLayerInfo += strLinetype;
			strLayerInfo += ",";

			CString strLineWeight;
			AcDb::LineWeight lineWeight = pLayerTblRcd->lineWeight();
			strLineWeight.Format(_T("%d"),lineWeight);
			strLayerInfo += strLineWeight;

			f.WriteString(strLayerInfo);
			f.WriteString(_T("\n"));

			pLayerTblRcd->close();
		}
		delete pItr;
		pLayerTbl->close();
	}

static void qxzyOperateLayer_ImportLayer(void)
	{
		CStdioFile f;
		CFileException e;
		char *pFileName = "C:\\layers.txt";
		if(!f.Open((LPCTSTR)pFileName, CFile::modeRead, &e))
		{
			acutPrintf(_T("\n打开导入文件失败！"));
			return;
		}

		AcDbLayerTable *pLayerTbl;
		AcDbLayerTableRecord *pLayerTblRcd;
		acdbHostApplicationServices()->workingDatabase()
			->getLayerTable(pLayerTbl, AcDb::kForWrite);

		CString strLineText;
		while(f.ReadString(strLineText))
		{
			if(strLineText.IsEmpty())
				continue;

			CStringArray layerInfos;
			if(!GetFieldText(strLineText, layerInfos))
				continue;

			AcDbLayerTableRecord *pLayerTblRcd;
			AcDbObjectId layerTblRcdId;
			if(pLayerTbl->has(layerInfos.GetAt(0)))
			{
				pLayerTbl->getAt(layerInfos.GetAt(0), layerTblRcdId);
			}
			else
			{
				pLayerTblRcd = new AcDbLayerTableRecord();
				pLayerTblRcd->setName(layerInfos.GetAt(0));
				pLayerTbl->add(layerTblRcdId, pLayerTblRcd);
				pLayerTblRcd->close();
			}

			acdbOpenObject(pLayerTblRcd, layerTblRcdId, AcDb::kForWrite);

			AcCmColor color;
			Adesk::UInt16 colorIndex = atoi((LPSTR)(LPCTSTR)layerInfos.GetAt(1));
			color.setColorIndex(colorIndex);
			pLayerTblRcd->setColor(color);

			AcDbLinetypeTable *pLinetypeTbl;
			AcDbObjectId linetypeId;
			acdbHostApplicationServices()->workingDatabase()
				->getLinetypeTable(pLinetypeTbl, AcDb::kForRead);
			if(pLinetypeTbl->has(layerInfos.GetAt(2)))
			{
				pLinetypeTbl->getAt(layerInfos.GetAt(2), linetypeId);
			}
			else
			{
				pLinetypeTbl->getAt(_T("Continous"), linetypeId);
			}
			pLayerTblRcd->setLinetypeObjectId(linetypeId);
			pLinetypeTbl->close();

			AcDb::LineWeight lineWeight = (AcDb::LineWeight)atoi((LPSTR)(LPCTSTR)layerInfos.GetAt(3));
			pLayerTblRcd->setLineWeight(lineWeight);
			pLayerTblRcd->close();
		}
		pLayerTbl->close();

	}

static BOOL GetFieldText(CString strLineText, CStringArray &fields)
	{
		if(strLineText.Find(_T(","), 0) == -1)
		{
			return FALSE;
		}

		int nLeftPos = 0, nRightPos = 0;
		
		while((nRightPos = strLineText.Find(_T(","), nRightPos))!= -1)
		{
			fields.Add(strLineText.Mid(nLeftPos, nRightPos - nLeftPos));

			nLeftPos = nRightPos + 1;
			nRightPos ++;
		}

		fields.Add(strLineText.Mid(nLeftPos));

		return TRUE;
	}