Apparently, you can debug JScript in Visual Studio.

As far as I can tell, you’ll have to go “old school”, and do the equivalent of adding lots of printf statements to your code. This should help:

Some gadgets allow the user to configure extra settings.

The Sidebar Gadgets SDK documentation recommends 12 pixel Segoe UI

When you click on the “Show details” expander in the Windows Vista gadget gallery, Windows displays various information about the selected gadget (“Calendar 1.0.0.0” etc., in this example).

When your gadget is docked, it displays a background image, which is allowed to be alpha-transparent.

When you add a new gadget to the sidebar (by right-clicking and selecting “Add Gadgets…”), Windows Vista displays an icon for it.