Home
API, Reference Guides
Overview of external readers and the Altair Binary Format, the generic ASCII reader, running applications in batch mode, using Tcl/Tk commands, translators, and result math.
Tcl/Tk Commands
The application's scripting interface is a set of Tcl/Tk commands that follow a simple and consistent syntax.
Tcl/Tk Commands
Tcl/Tk classes for the following Altair HyperWorks applications.
Framework
hwi Class
hwi GetSessionHandle
Gets a handle to the current session.

Welcome
What's New
View new features for version 2024.1.
Get Started
Learn the basics and discover the workspace.
Tutorials
Discover product functionality with interactive tutorials.
API, Reference Guides
Overview of external readers and the Altair Binary Format, the generic ASCII reader, running applications in batch mode, using Tcl/Tk commands, translators, and result math.
- Extensions
  Extensions are programs integrated with the application to enhance or extend the user experience.
- External Readers and Altair Binary Format
  Altair Binary Format (ABF) is the standard binary format read by the program. A library called abflib allows you to create files in ABF.
- Generic ASCII Reader
  A generic ASCII reader is now available which allows you to bring custom results directly into HyperView. The Altair ASCII format is useful for reading the results of any in-house or propriety codes which are saved in a generic format.
- Batch Mode
  Batch mode allows you perform a series of operations outside the program interface.
- External Resources
  External resources can be registered in preference files, session files, or Templex files. If an external resource is registered in a program session, it is automatically registered in the session file when the session is saved.
- Python API
  The Python API documentation for HyperMesh applications.
- Tcl/Tk Commands
  The application's scripting interface is a set of Tcl/Tk commands that follow a simple and consistent syntax.
  - Program with APIs for Beginners
    APIs can be used to perform various actions in an application. For example, the AddPage API can be used to add a page within the project.
  - Object Hierarchy
    Overview of object hierarchy for HyperView, HyperGraph, HyperMesh, MotionView, MediaView and TextView.
  - Tcl/Tk Classes
    Links to the introductory pages for the Tcl/Tk commands that can be used in HyperView, MotionView, HyperGraph, HyperGraph 3D, TextView and MediaView.
  - Script Use Cases
    Examples of script uses cases.
  - Tcl/Tk Example
    Learn more about Tcl/Tk with this basic example.
  - Program with Tcl/Tk Command Tutorials
    Learn more about programming with Tcl/Tk commands with this tutorial.
  - Tcl/Tk Commands
    Tcl/Tk classes for the following Altair HyperWorks applications.
    - Framework
      - amfIMarker Class
      - amfIMeasure Class
      - amfIMovie Class
      - hwi Class
        hwi AutoStack
        hwi CloseStack
        Ends automatic handle tracking and releases any handles acquired during handle tracking.
        hwi GetActiveWindowHandle
        hwi GetActiveClientHandle
        hwi GetSessionHandle
        Gets a handle to the current session.
        hwi ListAllHandles
        Gets a list of all active handles.
        hwi OpenStack
        Begins automatic handle tracking.
      - hwI2DViewControl Class
      - hwI3DViewControl Class
      - hwIAMFExportOptions Class
      - hwIAnimator Class
      - hwIAnimator AtModelStep
      - hwIAVIExportOptions Class
      - hwIClientInfo Class
      - hwIDataFile Class
      - hwIFont Class
      - hwIH3DExportOptions Class
      - hwIHWC Class
      - hwIJPGExportOptions Class
      - hwILayer Class
      - hwIMessageLog Class
      - hwIObject Class
      - hwIPage Class
      - hwIPPTPublish Class
      - hwIPPTPublishOption Class
      - hwIPreferenceManager Class
      - hwIProject Class
      - hwIReportTemplate Class
      - hwISession Class
      - hwITemplex Class
      - hwIViewControl Class
      - hwIWindow Class
      - hwIXMLFile Class
    - MotionView
    - HyperView
    - HyperGraph 2D
    - HyperGraph 3D
    - MediaView
    - TextView
    - HgTrans
    - TableView
    - Postquery Commands
    - Context Commands
    - Framework Commands
- Translators
  Translators are utilities that are run from the command line of the operating system to convert various types of files into different formats.
- Result Math
  XML commands in the Result Math Module.
- HWC Console
  Record playback workflows in the application.
- HyperMesh Report
- Task Manager
  Use the Task Manager to load an XML file that defines tasks and their attributes.
- HyperMesh
- MotionView
- Templex and Math Reference Guide
- Script and Model Library
  The Script and Model Library is a database of freely accessible scripts and models posted by users and Altair engineers.

hwi GetSessionHandle

Gets a handle to the current session.

Syntax

hwi GetSessionHandle sessionhandle

Application

Tcl Query

Description

This command retrieves a handle to the current session.

Note: An hwi instance is always available.

Inputs

sessionhandle: The user-defined name of the session handle that you want to create with this command.

Example

To get a session handle with the name "mySession":

hwi GetSessionHandle mySession

Error

Returns the session handle name if successful; otherwise, an error message.