Where can I find the document for VC++?

Yes, it’s possible to remove those stale external links even bitmap references using VBA, though it’s a bit nuanced depending on how the link is embedded.

To automatically fill a field with the last open file, you can use the Inventor’s API method CommandManager.PostPrivateEvent with kFileNameEvent type.

There are some technical books on programming with C++ that you can read: Effective C++ by Scott Mayers and Modern C++ Andrei Alexandrescu.

To start with Visual Basic you should:

• Download Visual Studio Community Edition.
• Learn and understand the VB syntax and structure.
• Start by creating simple projects.
• Use Microsoft's documentation and tutorial to learn.

To create a rectangular pattern in VBA you should:

• Use RectangularPatternFeature object.
• Select the feature you want to apply.
• Specify the pattern directions.
• Use RectangularPatternFeature.Add method to create the pattern.