A group that can delete itself

[kaveh1000]

I have a number of groups on a card. I want a button on each group that deletes the entire group (including itself) when clicked.

I attach my minimal example and can't find a way to do this. I am sure obvious for the gods on this forum! Any ideas pls?

[bogs]

I am sure (it is?) obvious for the gods on this forum! Any ideas pls?

Sure, we've got lots of ideas, come back on the 8th day, we're a little busy right now.
signed : local wood sprite
(Just kidding )

First, let me ask if you already saw 'deleteGroup' in the dictionary. If not, it has an example attached to it-

Code: Select all

on deleteGroup -- remove the group being deleted from a list
  get lineOffset(the short name of the target,field "Groups List")
  delete line it of field "Groups List"
  pass deleteGroup
end deleteGroup

If your asking something else or something more specific, feel free to elaborate.

[Klaus]

Hi Kaveh,

as an admin I can assure there are only humans here in this forum!

Problem:
You cannot delete an object whose script is currently being executed, so the trick is to "outsource" the actual "delete" command!

Do like this:
Button script

Code: Select all

on mouseup
   put the long ID of the owner of me into yowsayowsayowsa
   send "delete_it yowsayowsayowsa" to this cd in 1
end mouseup

When using THE LONG ID we do not need to specify the type of object (button, field, group, whatever).

Card script

Code: Select all

command delete_it tObject
   delete tObject
end delete_it

Tested and works!


Best

Klaus

[bogs]

as an admin I can assure there are only humans here in this forum!

I don't remember seeing the checkbox for sprites when I signed up

[Klaus]

I KNEW you are a fairy queen!

[bogs]

We ain't all pixies :P

Selection_004.png (8.1 KiB) Viewed 4903 times

Never saw the movie "Tooth Fairy" eh?

This is a poster for the film Tooth Fairy. The poster art copyright is believed to belong to the distributor of the film, 20th Century Fox, the publisher of the film or the graphic artist.

[Klaus]

Never saw the movie "Tooth Fairy" eh?

Sure I did, with my friend Dwayne and the lovely Julie Andrews!

[kaveh1000]

Thank you Klaus. You are still a god when viewed from down here.

Works nicely. My error was putting the delete handler in the group.

[Klaus]

Hi Kaveh,

this is just 20 years of experience in working with Livecode and its ancestors (MetaCard, Revolution). And the first three years without internet access (yes, those were the days), so just try & error, hard but highly effective!

Best

Klaus

[kaveh1000]

I started with Hypercard beta, before Apple had a manual. Been dabbling ever since. The love never goes away...

[bogs]

Meh, you spoiled brats! InterWebz, PSHAW Manuals... we used hieroglyphs!!

When I started, all we had was an Antikythera device, a chisel, and an Abacus, and we LIKED it that way

I can tell you many was the time we had to walk to the temple in 25 cubits of snow, UPHILL both ways, just to attend the ritual sacrifices...