Home » Teigha » Teigha™ for .dwg files

Teigha™ for .dwg files

Versatile and powerful object oriented C++ API used to create CAD and technical graphics applications of any size

With Teigha for .dwg files, create simple utilities to full CAD systems with these features:

  • Access and save all data in .dwg and .dxf files.


    Public Downloads

    Member Downloads

    Member Documentation

    Member Technical Support

    Contact

  • Create .dwg and .dxf files of any size and containing any object type.
  • Render (view) and edit (redline) objects.
  • Batch edit .dwg and .dxf files (e.g., turn layers on/off or replace text strings in a series of files).
  • Convert to/from .dwg and .dxf files, including any supported legacy version.
  • Export data to SVG, PDF, DWF, BMP, STL files. Import DWF files.
  • Generate thumbnails.
  • Access custom objects.

Teigha for .dwg files is available for download by ODA members. Not a member? Several sample applications and a subset of the documentation can be found in Public Downloads.

Detailed Features

  • Supported DWG™, DXF, and BDXF file formats:
    • Read support for .dwg files created in Autodesk® AutoCAD® 2.5 through AutoCAD 2011.
    • Write support for .dwg files created in AutoCAD 12 through AutoCAD 2011.
  • Render .dwg and .dxf files using GDI, OpenGL, or DirectX with the ability to select entities.
  • Recover and repair damaged .dwg files.
  • Edit and manipulate .dwg file data programmatically, including (with many more):
    • Explode an entity into a set of simpler entities.
    • Apply a transformation to an entity.
    • Modify arbitrary properties of database objects.
    • Clone a database object.
  • Export .dwg and .dxf file data to SVG, PDF, DWF, BMP, STL.
  • Import DWF files.
  • Support custom objects — users can create custom objects that are usable within any Teigha for .dwg files host application.
  • Support external files such as font files (TTF/SHX), linetype files (LIN), and hatch pattern files (PAT).
  • Recompute dimension geometry from dimension settings.
  • Support transactions and undo/redo capabilities.
  • Support partial .dwg file load capabilities, allowing fast access to small subsets of drawing entities (entities are loaded from disk only if they are explicitly accessed by the client).
  • Customize memory management allowing client applications to control memory allocation/deallocation.
  • Support “round-trip” data.  For example, when saving a 2007 .dwg file back to R14, 2007-specific properties are saved to the R14 file as xdata and then restored if the file is loaded back into a 2007-compatible application.
  • Support ACIS internally, including rendering (wireframe and shaded) for embedded ACIS 3D solids and access to the underlying boundary representation data stored within an ACIS entity.
  • Implement custom commands.  
  • Integrate with third-party components. More details at Third Party Components.

Example Applications

Teigha for .dwg files comes with several example applications that cover a wide range of user applications, including:

  • OdReadEx – Demonstrates how to read a .dwg or .dxf file and extract entity level data from the file.
  • OdWriteEx – Demonstrates the programmatic creation of a .dwg file containing examples of most supported entity and object types.
  • OdCopyEx – Load any .dwg or .dxf file and save a specified version and type.
  • OdDwfImportEx – Demonstrates DWF import capabilities.
  • OdDwfExportEx – Demonstrates DWF export capabilities.
  • OdaMfcApp – MFC application which demonstrates rendering, entity selection, grip points, PDF export, custom commands, and many other features.

Supported Operating Systems and Compilers

Note: Additional platforms may be provided upon request.

Windows 2000, ME, XP, Vista Visual Studio 6, 2002, 2003, 2005, 2008 (static/dll) Borland Builder 6, 2006, 2009 (static)
Windows CE Visual Studio 2005 (ARMV4/ARMV4I static)
Windows x64 Visual Studio 2005, 2008 (static)
Linux (x86/x64) Gcc 3.3, 3.4, 4.1, 4.2 (static/dynamic)
Mac OS/X (ppc/x86/x64) Gcc using 10.3, 10.4, 10.5 SDK (static/dynamic)
SGI MIPSpro C++ Compiler 7.3 (static)
Solaris (Sparc/x86/x64) Sun C++ Compiler (static) Gcc 3.4 (static)
HP-UX (RISC) aC++ (static)
IBM AIX XL C++ Compiler (static)

 

DWG is the native and proprietary file format for AutoCAD® and a trademark of Autodesk, Inc. The Open Design Alliance is not associated with Autodesk.