Nothing here is about things to fix,
but rather about how impossible to debug event handling in system that runs
and relies on very same events..
I had very annoying problem with mouse move handling and processing it
correctly, and i finally solved the problem after number of attempts to
track down where problem lies in..

So, here is small list of problems i faced:

 - broken image (image won't start up) , because i send unimplemented
message in critical place, thus image simply non-responsible/crashing
immediately after startup. Easy to fix (sarcasm)

- debugger window spam on every event (because of DNU/other exception).
A slightly friendlier problem than above :)

- and last one, if you break some event handling/delivery, even if image
"behaves" you simply left without events doing what is needed, means you
got another form of a broken image, which you cannot use anymore and need
to start over and revert the changes you made.

- veeeerrrrryyy slow event handling, because of printing every event into
transcript , trying to see where the shit lies.

- decrypting kilometers long event traces to see what goes where

But when things finally start work properly, you feel excited :)

-- 
Best regards,
Igor Stasenko.

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