Launch Conditions. Property Syntax for WMP

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James Dixon - 15 Aug 2004 22:03 GMT

I want to run MPSetup.exe if the Windows Media Player version is less than 9
on a client.

I have been up and down MSDN's KB and this MB for the Launch
Conditions.Condition property for the synatx, but the only 2 examples I see
are:
VersionNT>500
and
MDACVER >= 3.0

Is there a comprehenisve list for MS products?

I was going to start trying variations of
WMPVER>9
or checking the registry key

Any suggestions?

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James Dixon - 16 Aug 2004 01:25 GMT

I figured one way to do it

Create a search of the Registry Key

Then Ref the Search in the Launch Conditions

Might be a built in Version like NTVersion, but just as fast to search the
registry

--Jamie

> I want to run MPSetup.exe if the Windows Media Player version is less than 9
> on a client.
[quoted text clipped - 13 lines]
>
> Any suggestions?

Reply to this Message

Phil Wilson - 16 Aug 2004 18:25 GMT

There's a list here - there isn't a media player value.

http://msdn.microsoft.com/library/en-us/msi/setup/property_reference.asp?frame=true

Signature

Phil Wilson [MVP Windows Installer]
----

>
> I figured one way to do it
[quoted text clipped - 27 lines]
> >
> > Any suggestions?

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James Dixon - 18 Aug 2004 00:42 GMT

Kinda of interesting/annoying

I created a Serach of the registry key:
name:Windows Media Player Version
Property: WMPVERSION
RegKey:6BF52A52-394A-11d3-B153-00C04F79FAA6
Root:vsdrrHKLM
Value: Version

Then, I created a launch condition like this:
Name: WMPLaunchCondition
Condition: {See Below}
InstallURL: /MPSetupXP.exe
Message: You Don Not Have WMP 9, Press Yes To Install

The value in the registry is: 9.0.0.2980

Here are the conditions I used and the results:
WMPVersion = 99: false
WMPVersion=9.0.0.2980:true
WMPVersion <> 9.0.0.2980: true
WMPVersion<9.0.0.2980: true
WMPVersion>9.0.0.2980: true
WMPVersion<9: false
WMPVersion>9: false

I am guessing that the Value is actually a string, so you can't do any kind
of artimatical compare (<,>,etc...)
If so, why does a condition of VersionNT<501 work?
How can I cast my Seach Value it from a string to an int/float

Why does MSDN sux for giving examples of these kind of thing?

> There's a list here - there isn't a media player value.

http://msdn.microsoft.com/library/en-us/msi/setup/property_reference.asp?frame=true

> > I figured one way to do it
> >
[quoted text clipped - 27 lines]
> > >
> > > Any suggestions?

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Phil Wilson - 19 Aug 2004 03:04 GMT

Property comparisons can be interesting. It works with VersionNT because it
returns something that can be treated as a number. Versions with periods are
more difficult. A string comparison might work: WMPVERSION>"9.0.0.0"

Signature

Phil Wilson
[MVP Windows Installer]
Definitive Guide to Windows Installer
http://www.amazon.com/exec/obidos/tg/detail/-/1590592972/104-7044380-4696760

> Kinda of interesting/annoying
>
[quoted text clipped - 30 lines]
>
> > There's a list here - there isn't a media player value.

http://msdn.microsoft.com/library/en-us/msi/setup/property_reference.asp?frame=true

> > > I figured one way to do it
> > >
[quoted text clipped - 29 lines]
> > > >
> > > > Any suggestions?

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James Dixon - 20 Aug 2004 02:29 GMT

Nope
WMPVersion="9.0.0.2980":false
WMPVersion<>"9.0.0.2980":false

Grrr....
I am just checking the registry number in my app now
$36 Billion in reveune and they can't have 1 person on the books who thought
of this ahead of time? Breaks the heart.

> Property comparisons can be interesting. It works with VersionNT because it
> returns something that can be treated as a number. Versions with periods are
> more difficult. A string comparison might work: WMPVERSION>"9.0.0.0"

http://www.amazon.com/exec/obidos/tg/detail/-/1590592972/104-7044380-4696760

> > Kinda of interesting/annoying
> >
[quoted text clipped - 31 lines]
> >
> > > There's a list here - there isn't a media player value.

http://msdn.microsoft.com/library/en-us/msi/setup/property_reference.asp?frame=true

> > > > I figured one way to do it
> > > >
[quoted text clipped - 31 lines]
> > > > >
> > > > > Any suggestions?

Reply to this Message

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Launch Conditions. Property Syntax for WMP

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