2 ms·

Only if using safe-for-scripting/Ole Automation types/interfaces in your IDL. Otherwise, it's fully possible to pass C-style arrays in COM.

• pjmlp 5y ago
  Which is the case here, => "Microsoft.Office.Interop.Excel".
• poizan42 5y ago
  Excel is out-of-proc so it relies heavily on marshaling. It's either that or custom marshaling. Also it's the same interface as is used internally in the application with VBA scripting.