Re: [wxhaskell-users] Window flash on open

[Daan L. <daa...@xs...>]

On Sat, 26 Jun 2004 22:17:33 +0200, Vincenzo aka Nick Name <vincenzo_mlRE=
.MO...@ya...> wrote:

> On Friday 25 June 2004 11:40, Daan Leijen wrote:
>> downside of "creation" attributes is that it creates a distinction
>> between:
>>
>> =A0 =A0 w <- widget [...]
>>
>> and
>>
>> =A0 =A0 w <- widget []
>> =A0 =A0 set w [...]
>
> Why is it a problem? It should be obvious to an user that a property
> could have an initialization value with a default setting. If you are
> in the IO monad it should be clear enough that the second form first
> creates the widget using default settings and then sets the properties;

Thanks Vincenzo and Claus for your feedback,

I guess that I was trying to satisfy too many laws, and
maybe creation attributes are indeed a natural thing.
I was already (planning on) supporting creation attributes, as I
failed to come up with a nicer solution. Now that it seems that
this is even a "natural" extension, it makes me feel much more
confident about it.

I like the model of "defaultAttrs ++ creationAttrs" of Claus,
this explains it nicely.

Thanks,
  Daan.


> the only alternative I see would be an (infamous) GUI monad which
> people seem to dislike: even if you could hide the widget and show it
> on demand, there might be other things unrelated to graphics that
> behave differently if done during initialization or after, do you
> agree?

Yes, let's stay away from a GUI monad :-)


>
> Vincenzo
>
>
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