ArcObjects c++ 获取栅格或矢量图层的范围

        double xLeft = 0;double yBottom = 0;double xRight = 0;double yUpper = 0;if (0 == inputType){//获取矢量图层的范围CComBSTR srcPath;srcPath = GeoProcessHander::QString2BSTR(inputPath);CComBSTR srcName;srcName = GeoProcessHander::QString2BSTR(inputName);IWorkspaceFactoryPtr ipWkspFactory(CLSID_ShapefileWorkspaceFactory);IWorkspacePtr ipWksp;HRESULT hrw = ipWkspFactory->OpenFromFile(srcPath, 0, &ipWksp);if (FAILED(hrw) || ipWksp == 0){return false;}IFeatureClassPtr ipSrcFeatureClass;hrw = ((IFeatureWorkspacePtr)ipWksp)->OpenFeatureClass(srcName,&ipSrcFeatureClass);if (FAILED(hrw) || ipSrcFeatureClass == 0){return false;}IFeatureLayerPtr ipFeatureLayer(__uuidof(FeatureLayer));ipFeatureLayer->putref_FeatureClass(ipSrcFeatureClass);IEnvelopePtr ipEnv(CLSID_Envelope);ipFeatureLayer->get_AreaOfInterest(&ipEnv);ipEnv->get_XMax(&xRight);ipEnv->get_YMax(&yUpper);ipEnv->get_XMin(&xLeft);ipEnv->get_YMin(&yBottom);}else if (1 == inputType){//获取栅格数据范围CComBSTR srcPath;srcPath = GeoProcessHander::QString2BSTR(inputPath);CComBSTR srcName;srcName = GeoProcessHander::QString2BSTR(inputName);IWorkspaceFactoryPtr ipWkspFactory(CLSID_RasterWorkspaceFactory);IWorkspacePtr ipWksp;HRESULT hr = ipWkspFactory->OpenFromFile(srcPath, 0, &ipWksp);if (FAILED(hr) || ipWksp == 0){return false;}IRasterWorkspacePtr ipRastWork(ipWksp);IRasterDatasetPtr ipRastDataset;hr = ipRastWork->OpenRasterDataset(srcName, &ipRastDataset);if (FAILED(hr) || ipRastDataset == 0){return false;}IRasterLayerPtr ipRasterLayer(__uuidof(RasterLayer));ipRasterLayer->CreateFromDataset(ipRastDataset);IEnvelopePtr ipEnv(CLSID_Envelope);ipRasterLayer->get_AreaOfInterest(&ipEnv);ipEnv->get_XMax(&xRight);ipEnv->get_YMax(&yUpper);ipEnv->get_XMin(&xLeft);ipEnv->get_YMin(&yBottom);}