Re: [TCLCORE] CFV on small high-prio TIPs

[Kevin K. <ke...@ac...>]

Kevin Kenny wrote:
>>   TIP #238: Fire Event when Widget Created
> YES,  but see below.

Jeff Hobbs convinced me to reread the TIP, and I've come
to realise that the specification there is Not Quite Right.
Since we don't have a NOT YET vote, please change mine to
NO.

It's not as bad as Jeff's message makes out. In particular,
it's useful primarily because there isn't any convenient way
to find out, right now, that a window actually exists; the
closest thing we have at script level is to find out that
it's been made visible, had its geometry requested, or mapped.
(<Visibility>, <Configure> and <Map> respectively). None of
these is quite right.

Moreover, simply delivering a putative <Create> notification
through the existing binding mechanism ought to work fine.
It is a rare case indeed for which widget creation doesn't
make at least one trip through the event loop before making
the window exist. In any case, the <Create> event is conceptually
coming through the event loop. There is therefore a chance
for the script that defines a window to define its bindtags
before a <Create> has a chance to be delivered.

I think 238 is salvageable, but not while it's voting.

-- 
73 de ke9tv/2, Kevin