Thanks Mark and Andre.
Mark's description of the solution is correct - but in my situation it's
not a solution.
The sub-groups (B in my earlier example) are opaque - they have
coloured, filled backdrops so that they can capture e.g. mouseMove
messages, so they need to be opaque. Therefore, I can't simply re-layer
so that the 'direct' graphics are behind (below) the groups.
The custom properties 'selector' idea is interesting - I'll need to mull
it over some more.
I'm currently thinking of something like
function idOfChild pLongID, pShortName
repeat for each line L in the childControlIDs of pLongID
if the short name of control ID L = pShortName then return the
long id of control ID L
end repeat
end idOfChild
unless someone sees a problem with that. (And of course I'll do that
once and cache the values for continuing use).
Alex.
On 27/07/2020 15:40, Andre Garzia via use-livecode wrote:
Alex,
I think that Mark solution is the correct one but I couldn't resist telling
you some other idea, one that is only applicable if performance is not a
problem.
You can add custom properties to controls you want to find later and then
look for them by looping everyone in the card. A reusable short function
can be created with whatever letter you want, like "q", and code similar
totrolIDs of
this:
function q selector, value
repeat with x = 1 to the number of controls in this card
if the selector of control x of this card is value then
return the long id of control x of this card
end if
end repeat
end function
And then you can go:
put q("blue-rect", "true") into tLongID
You can even have something like "qq" that returns a list of long ids for
all the controls that match that query. Caching these results is the best
architecture, on preOpenCard you can find all the controls you'll need and
place them in script local arrays, then all the functions that need them
can peek into those arrays.
It is a bit convoluted but allows for some clever programming. Remembering
that "clever" is one of the trickster spirits of the software development
world.
Best
A
On Mon, 27 Jul 2020 at 01:33, Alex Tweedly via use-livecode <
use-livecode@lists.runrev.com> wrote:
I think my head is melting :-)
I have a group called 'A'.
Inside A, there is a rect called "R" and also a group called "B"
inside B there is a rect called "R"
How do I refer unambiguously to the first rectangle (i.e. A - R, not A -
B - R) ?
If I say
grc "R" of grp "B" of grp A
then I unambiguously get A-B-R; but if I say simply
grc "R" of grp "A"
then I *also* get A-B-R.
There must be a way to do this (and maybe if it wasn't nearly 2 in the
morning I would be able to figure it out).
Help! Please !
Alex.
_______________________________________________
use-livecode mailing list
use-livecode@lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage your
subscription preferences:
http://lists.runrev.com/mailman/listinfo/use-livecode
_______________________________________________
use-livecode mailing list
use-livecode@lists.runrev.com
Please visit this url to subscribe, unsubscribe and manage your subscription
preferences:
http://lists.runrev.com/mailman/listinfo/use-livecode
