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To: mwforum@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: MIA, Ask an Expert: ht-st with slider
From: Alain LCSI <alain@xxxxxxx>
Date: Thu, 04 Oct 2007 20:38:35 -0400

Hi!

May I first suggest that you use a checkbox instead?

Create a checkbox (from Objects menu), name it "visibility".
Create a turtle, open its backpack.
In the OnTick field, type
ifelse visibility [st] [ht]
Leave the frequency at 10 (every second)
With that, every second, the turtle will check the value of the checkbox named visibility. The word visibility, being the name of the checkbox, will report true or false, which is what ifelse needs.

Now with the slider:
Create a slider (from Objects menu), name it "visibility".
Set its min to 0 and its max to 1
Create a turtle, open its backpack.
In the OnTick field, type
ifelse visibility = 0 [st] [ht]
Leave the frequency at 10 (every second)
With that, every second, the turtle will check the value of the slider named visibility. The word visibility, being the name of the slider, will report o or 1, which will be used by the = sign, which will do its thing and report the result of the comparison.
Bingo.


Alain Tougas
alain@xxxxxxx
B: (514) 939-8700 poste 237



Le 07-10-04 à 20:00, askanexpert@xxxxxxxxxxxxxxxxxxxxxxxxxxxx a écrit :

This is an automatic message sent from the web form at:
http://www.openworldlearning.org/mia/howdoi.htm

from: Edwin < mudeen@xxxxxxxxxxxxxxxxxxxxx>
date: Thu Oct  4 18:00:45 2007
platform: PC
version: MicroWorlds Pro

Can you tell me how to use hide turtle (ht) show
turtle with a slider? Thank you for your help.

Edwin







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