Hi,

I'm new to GWT and thinking of using it for a new version of an
existing app.  I just went through the tutorial for the StockWatcher.
Now I'd like to learn a bit more about 2 things...

1. how to create custom widgets (not composites).
2. how to take control of the low-level stuff, like exactly what HTML
or Javascript is getting "rendered" in the browser.

I feel uncomfortable with any toolkit that doesn't allow this, because
sometimes I need to fix some weird bug and there is no other way than
an ugly low-level fix.  The closest thing I found in the docs is in
the "Building User Interfaces" section of the "Developer's Guide".  It
says to start with the source code for Button and TextBox.  I looked
at those classes but I could use a guide to the architecture... is
there anything like that?

Also... one of the custom widgets that I'd like to build is something
that allows a user to highlight and attach notes to the document -- as
students would in a textbook.  Is such a thing possible with a custom
widget?  Any libraries I should check to see if such a thing already
exists?

thanks,
Rob

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