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Re: Tooltip ans Sound - 2nd posting

  • To: mathgroup at smc.vnet.net
  • Subject: [mg93400] Re: Tooltip ans Sound - 2nd posting
  • From: dh <dh at metrohm.ch>
  • Date: Thu, 6 Nov 2008 04:05:57 -0500 (EST)
  • References: <gepb36$si1$1@smc.vnet.net> <gerqjb$res$1@smc.vnet.net>


Hallo David,

I would like to understand your solution. Why is EmitSound evaluated? I 

(probably wrongly) thought that Dynamic[..] is reevaluated only if the 

argument changes, not on every display.

Daniel



David Bailey wrote:

> axel wrote:

>> Hello,

>>

>> I have found that Tooltip[obj1, obj2] evaluates obj2 upon a mouseover

>> event on obj1. The objects can either be Text or Graphics, all

>> combinations work. Here is my question: can I use a Sound as obj2? I

>> want to hear a specific sound when my mouse enters the notebook area

>> occupied by obj1.

>>

>> Thank you

>>

>> Axel

>>

>> PS: using Tooltip[obj1, Play[...]] works but is not useful because one

>> cannot reach the play-button. Also, I want to hear the sound upon the

>> mouseover event, without the need of further action.

>>

> 

> I don't think obj2 is evaluated at the point of mouseover, but that 

> would not stop obj2 being a graphics object. To get an immediate sound 

> (as opposed to a widget that can play a sound) you need EmitSound, which 

> needs to execute when it is displayed, which you can get using Dynamic:

> 

> Tooltip[fred,

>   Dynamic[EmitSound[

>     Sound[{SoundNote["c5", 0.3], SoundNote["g4", 0.3]}]]; ""]]

> 

> David Bailey

> http://www.dbaileyconsultancy.co.uk

> 





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Daniel Huber

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CH-9100 Herisau

Tel. +41 71 353 8585, Fax +41 71 353 8907

E-Mail:<mailto:dh at metrohm.com>

Internet:<http://www.metrohm.com>




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