Debugging through events

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Cowdery, Bob [UK] wrote:
> Is there a way to debug or even put Transcript writes into event
> handlers like drawOn and extent. My attempts seem to hang Squeak.

Look at my CircularTranscript package (should be on SqueakMap but I
don't seem to have put it there); it is a transcript that you can write
to during event handlers, as it doesn't cause an immediate redraw.

http://bike-nomad.com/squeak/monticello/MiscTools/CircularTranscript-nk.11.mcz

You can't usefully use an interactive debugger from an event handler.

Thanks,
--
Ned Konz
[hidden email]
http://bike-nomad.com

Cowdery, Bob [UK] skrev:
> Is there a way to debug or even put Transcript writes into event
> handlers like drawOn and extent. My attempts seem to hang Squeak.
Here is a example I just did in FishEyeMorph that worked

extent: aPoint
    "Round to a number divisible by grid.  Note that the superclass has
its own implementation."
    | g gridSize |
    gridSize _ self gridSizeFor: aPoint.
    "self halt."
    Transcript show: aPoint asString.
    g _ (aPoint - (2 * borderWidth)) // gridSize.
    srcExtent _ g * gridSize.
    gridNum _ g.
    ^super extent: self defaultExtent

Karl