Testing for QT effects on Windows systems

[Sannyasin Sivakatirswami]

I develop only on Mac OSX for all systems and have no easy access to 
windows machines and am a bit of a newbie on cross platform media 
playing issues...

I have a presentation that one Windows user says "it asked me for QT 
effects"

This was unexpected because I thought I had used no effects that 
required quicktime...
  later I discovered a "cross fade" lurking that I had tested and not 
removed.

But, meanwhile I had queried this user about his system and he says

"It works fine for me on Windows 98 Second Edition, except that it 
wanted to install Quicktime.
It wanted to install "Quicktime Effects"
(I don't use quicktime at all, other than the codec for playing movies 
and audio.).[but]
I use Windows Media Player Classic (http://www.gabest.org) for playing 
audio and video.
"I use Quicktime to play movies and sound if it required, but I don't 
have it installed."

This leads one to ask:

1) Assuming one uses (in my case) only "dissolve" and "wipe" throughout 
the presentation... (I will eliminate the "cross fade") will Windows 
users still get a demand to install QT if one has not set the  
"dontUseQTEffects" to true? Or, was my single instance of "cross fade" 
the cause for this?

2) Obviously querying the platform first makes the best sense... so, if 
QTeffect is not installed on a windows system will

put QTeffects()

just return empty on a system that does not have QT installed?

If so, then one assumes this will be the optimum thing to do, to trap 
for this problem...

if (QTeffects()="") then set the dontUseQTEffects to true

But then is this really necessary if only built in Rev visual effects 
are used?

3) And does this mean that a windows user with Windows Media Player 
Classic who has the Quicktime codex installed can in fact run any Rev 
player (sound or movie)?


tia


Sannyasin Sivakatirswami
Himalayan Academy Publications
at Kauai's Hindu Monastery
katir at hindu.org

www.HimalayanAcademy.com,
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