Quote Originally Posted by jhowland View Post
What I would like is for the widgets to expand into that available space.
This sounds like you didn't use a layout somewhere.

I have tried very hard to attach an image that shows the result of my code, but the attachment technique doesn't appear to work--when I either select my image or drag it into the attachment window, I end up with a window showing my image, but no other options for attach, post inline, etc.
You could use a website like imageshack and post the link here.