CLIM mail archive
Re: presentation actions
> Date: Thu, 7 Feb 1991 16:57-0500
> From: Scott McKay <SWM@sapsucker.scrc.symbolics.com>
> Date: Thu, 7 Feb 1991 12:03 EST
> From: firstname.lastname@example.org
> OK, but then what is the canonical way of doing some side effect without
> going through a command? For example, suppose I wanted to have some
> mosue-sensitive buttons that control what is being displayed like those
> little triangle things in Mac OS 7 directory listings. I though that
> presentation actions would be the way to implement these. Or is this
> kind of usage considered to be OK?
> I haven't yet seen MacOS 7, so I don't know what it is you are referring
> to. If it is just redisplay of data that can take place independent of
> changing application state, then it might be OK.
That's what it is. It's enabling or disabling showing the next level of
structure in a tree, and doesn't change any state aside from the display,
let alone interfering with commands.
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