# HOOPS Exchange 2018

## License Key Update

Important: A new license key specifically generated for HOOPS Exchange 2018 and above is required. Licenses generated for previous versions will not work. Please visit the HOOPS Exchange download page to generate a new key.

In addition, the header file downloaded from the Developer Zone has been renamed from A3DSDKLicenseKey.h to hoops_license.h. Place hoops_license.h in the include directory of your application; A3DSDKLicenseKey.h files from previous versions will no longer work.

Lastly, `A3DLicPutLicense()`, `A3DLicPutPRCLicense()` and `A3DLicPutLicenseFile()` have been replaced by `A3DLicPutUnifiedLicense()`. Please note, the return type and parameters for `A3DLicPutUnifiedLicense()` are different from the functions it is replacing.

## Format Updates

Format | Updated Version
--- | ---
SolidWorks | 2018
SolidEdge | ST10

## New Formats: DWG and DXF

DWG and DXF Support. Exchange now supports DWG and DXF Drawings and 3D as input formats.

JT

The following enum identifiers in A3DEJTReadTessellationLevelOfDetail have changed: JTTessLODLow, JTTessLODMedium, JTTessLODHigh.

These identifiers now have a “kA3D” prefix: kA3DJTTessLODLow, kA3DJTTessLODMedium, kA3DJTTessLODHigh.

Parasolid

Multi-Process Export. Exchange can now directly translate and heal a model file into Parasolid using multi-process. See A3DRWParamsTranslateToPkPartsData::m_uiNbProc for more information.

Import Parasolid data into Exchange. We have included functionality to import data from a Parasolid session into Exchange. This is particularly helpful when used in conjunction with our exporter. See A3DPkPartsTranslateToA3DAsmModelFile for more details.

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