I am building an RDP client and I have toolbar that shows the running applications, same as the Windows toolbar. I need to support dual monitors, so my questions are 1) How do I detect that there is more than one monitor and 2) Is there a formula for calculating the width of the icons on the toolbar?

I know that at the start, the width is not dependent on the number of monitors, and is always the same size. What does change is the number of icons I can display before I must start "shrinking" their width, and it will depend on the screen resolution as well.

Any ideas?