For example consider that a file has been created based on the AutoCAD version 2009 then you define MS_REALDWG_VER SION = 2009 before opening the file. Also, before opening a file that includes custom objects, make sure that exactly the same DWG file format is set. If a DWG file has to be edited later on with the application with which it was built, be sure to make a backup copy of the original file first before opening it in MicroStation. Otherwise you may see problems with them. If the answer to all three questions is positive, then your proxi es may display correctly. In such a case, as described above, these objects become proxies, which may or may not be displayed correctly depending on: (a) if the DWG file as last saved with system variable PROXYGRAPHICS on AutoCAD, (b) if the object enabler is designed to save the graphics in response to this system variable, and (c) if the information/geometry saved in the proxies is as good as you expect (wireframe or mesh, for example). If you do not have these object enablers, you will see the message: “One or more Object Enablers is missing” in the status bar after you opened such a DW G file.
Therefore, it is recommended that you get an objec t enabler for DWG files that contain custom obj ects. Thus versions of MicroStaton V8i Selectseries 1 or later, DWG files are opened with Autodesk's RealDWG a nd custom objects with their object enabl ers are better displayed. Following Bentley's agreement with Autodesk, RealDWG libaries were available for use in MicroStation.
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