Is it allowed to build and ship custom DLL-based add-ins for Autodesk Inventor, and what’s the right way to handle Inventor DLLs?

Import AutoCAD Blocks into Inventor Drawing Templates

• You can import your standard AutoCAD blocks (with attributes, if needed) directly into an Inventor .dwg or .idw drawing template:
• Open your Inventor drawing template.
• Use Insert > AutoCAD Block to bring in your .dwg blocks.
• Once inserted, they’re saved in the template and can be reused across drawings.
• Even if you delete them from the sheet, they remain available in the block list for future use.

As of now, the Inventor API does not provide write access to sheet formats. You can read the title block definition associated with a sheet format, but you cannot modify or replace it directly via the API.

In the context of Autodesk Inventor (and many CAD systems), the 'reference vector' for an arc typically refers to the direction vector used to define the orientation of the arc's plane or its sweep direction-especially when the arc is created in 3D space.

To add bolts, nuts, washers, and other fasteners in Inventor’s Design Accelerator, you’ll want to use the Bolted Connection Generator a powerful tool that automates the placement of standard hardware.

Use the DrawingPrintManager Object

Inventor’s DrawingPrintManager gives you some control over print settings, though not all UI options are exposed. You can access it like this:

• Dim printMgr As DrawingPrintManager = ThisApplication.ActiveDocument.PrintManager
• printMgr.AllColorsAsBlack = True ' Example setting
• printMgr.PrintRange = kPrintAllSheets
• printMgr.SubmitPrint