Re: Java/Swarm questions

[Charles Staelin]

Marcus,

The swarmapps might indeed be out of date.  I'll pull down the latest
versions and see if the doTkEvents message is sent to actionCache in those.

The raster in this application doesn't have any setButton messages
activated.  No probes.  It may be the Tcl/Tk problems.   [Indeed (though I
hate to admit it), I'm still running under Windows95.  I'm working on
getting myself an upgrade to NT, however.]

Thanks,
Charles

--------------------------------------------------------------------------
Charles P. Staelin                              address@hidden
Department of Economics
Smith College                                    (413) 585-3621
Northampton, MA 01063                  (413) 585-3393 (FAX)
----- Original Message -----
From: "Marcus G. Daniels" <address@hidden>
To: <address@hidden>
Sent: Wednesday, March 22, 2000 8:37 PM
Subject: Re: Java/Swarm questions


> >>>>> "CS" == Charles Staelin <address@hidden> writes:
>
> CS> I'll take a few hours to document the tutorial for Java and post it.
>
> Wow, that would be terrific!
>
> CS> 1. The ObjectiveC Simplebug programs send a "doTkEvents" message
> CS> to the control panel in order to update the display and check for
> CS> a control panel button push at each step.
>
> CS> Or is the Simplebug code simply out of date?
>
> For several releases now (of swarmapps), those apps send to "actionCache".
> Where do you see this done?
>
> CS> Is the ActionClass a superclass for the control panel in the java
> CS> version of things?
>
> There is an ActionCache instance ivar in a GUISwarm, "actionCache".  The
> ActionCache is a queue that soaks up events and feeds them to the
> ControlPanel instance also in the GUISwarm, "controlPanel".
"controlPanel"
> is what actually starts and stops the top level activity.
>
> CS> When would you send a doTkEvents message to the control panel
> CS> alone?
>
> It should always be actionCache.
>
> CS> detects an unrecoverable error in the code?  Is there a graceful
> CS> way, or needn't one worry about grace in this event?
>
> In a GUI model, use "[controlPanel setStateQuit]".  In a batch model,
> use "[getTopLevelActivity () terminate]".
>
> CS> 3. I find that my ObserverSwarms work fine unless I click on the
> CS> display raster window during a simulation.  If I do that, the
> CS> whole machine hangs.  (I'm in Windows with Swarm 2.1 and the
> CS> latest fixes.)  Is the raster window supposed to respond in some
> CS> way to being "selected"?
>
> This isn't a Raster that has a setButton:Client:Message: used to
> configure a probe, say?  (One that might be wrong somehow.)
>
> There are problems with Tcl/Tk besides the latest Cygwin DLL on
> Windows 98 (not NT, AFAIK), but I can't tell if this is an instance of
> that.
>
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   with "help" in the body of the message.