As part of a little ongoing investigation, I wanted to communicate between a managed add-in and a native XLL UDF. As I was writing this up, it turned out to be a much longer post that I planned, so I've split it into two parts (I'll post the second part...

As part of a little investigation I'm doing at present, I needed to build some simple native XLLs for testing purposes. This was the first time I had a need to build XLLs since the Excel XLL SDK was updated back in September. The updated Excel 2007 XLL...

Hard on the heels of the Office DevCon, we've just announced the dates for the Microsoft Professional Developers Conference 2008 . Heads-up below. When : October 27–30, 2008, Pre-conference October 26, 2008 Where : Los Angeles Convention Center , Los...

Momentum is gathering for the 2008 Office Developer Conference , and here's the skinny: When: February 10-13, 2008 Where: San Jose Convention Center , San Jose, CA Who: 2000 developers and architects who build solutions on the Office platform...

The new extensibility interfaces introduced in Office 2007 are implementable via add-ins. Add-ins can be managed or unmanaged (native). If you're using VSTO, development is greatly simplified. However, if you want to build a native add-in to implement...