> Unfortunately, I went to First Steps guide and can't pass that level. 
> The 4 squares do appear but when I tried replace them by 
> other widgets, everything disapear.

If the UI doesn't come up at all, you either have a Javascript error
or you are not using a Qooxdoo widget properly.

You need to make sure you're really familiar with debugging tools.
Get Firebug for Firefox to debug any JavaScript errors (and later
if you do any AJAX calls back to your server, you'll be glad you
have Firebug).  Turn off CSS errors and turn on Javascript errors.

Use a debug console with QX.  See details here:

http://qooxdoo.oss.schlund.de/snippets/showing-debug-information

> P.S.: It would be very cool if the first step guide made 
> newbies like me create a small app with a windows and a 
> button that does something (so there is a first contact with 
> the event system).

Start from one the many demo examples and tests.  Find one that
uses the widgets you want to use.  Until you are really comfortable
with qooxdoo, you should make very small changes in the code and
test each change.

Jason Priebe
CBC New Media 


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