Launch conditions display when the evaluation is FALSE, i.e. the logic *fails*
To prevent installing my 32-bit package on a 64-bit OS, I use
something like this:
<Condition Message="!(loc.LaunchCondition_Error64)">
<![CDATA[Installed OR Not VersionNT64]]>
</Condition>
This means if "VersionNT64" evaluates to true (i.e. it's a 64-bit
system), I flip that to 'false'. If the application is not already
installed, then 'Installed' is also false - False OR False = False.
Hence the condition evaluates to false and the error message is
displayed to the user :)
Sascha
On Tue, Apr 20, 2010 at 9:22 PM, Andy Clugston <clug...@gmail.com> wrote:
> At the moment I am trying to understand the conditional logic I posted.
> Right now, when I attempt to install the condition is evaluating to TRUE and
> causing the *first* install to fail. I am not understanding why it is
> evaluating this way.
>
> On Tue, Apr 20, 2010 at 2:02 AM, Sascha Beaumont
> <sascha.beaum...@gmail.com>wrote:
>
>> So you want to prevent repair, uninstall and upgrades? Ugh.
>>
>> If the Product ID isn't changing, Windows Installer should bail
>> automatically with "Another version of this product is already
>> installed" from memory, if you're using an automatically generated
>> Product ID you can use the fact that Windows Installer ignores fourth
>> version field to detect when none of the first three have changed. See
>> my post from last week for more info.
>>
>> Sascha
>>
>>
>>
>>
>> On Tue, Apr 20, 2010 at 6:38 AM, Andy Clugston <clug...@gmail.com> wrote:
>> > I am attempting to determine if a specific version of a product is
>> already
>> > installed on the system. I basically want to do this to disallow/bail
>> out
>> > of an install if the MSI that is being executed is already installed on
>> the
>> > system.
>> >
>> > Here is my authoring using 3.0 RTM. I must be missing something simple:
>> >
>> > Upgrade table. FWIW, Product and Upgrade GUID is not changing for each
>> > build; only GUID that is changing is the Package GUID. Language
>> attribute
>> > matches as well.
>> >
>> > <Upgrade Id='$(var.UpgradeCode)'>
>> >
>> > <UpgradeVersion Minimum='$(var.ProdVer)'
>> > IncludeMinimum='yes'
>> > Maximum='$(var.ProdVer)'
>> > IncludeMaximum='yes'
>> > OnlyDetect='yes'
>> > Language='1033'
>> > Property='SELFFOUND'/>
>> > </Upgrade>
>> >
>> > Check to see if product previously installed *and* is this specific
>> version.
>> >
>> > <Condition Message="We be here!">Installed AND SELFFOUND</Condition>
>> >
>> > Thanks.
>> >
>> ------------------------------------------------------------------------------
>> > Download Intel® Parallel Studio Eval
>> > Try the new software tools for yourself. Speed compiling, find bugs
>> > proactively, and fine-tune applications for parallel performance.
>> > See why Intel Parallel Studio got high marks during beta.
>> > http://p.sf.net/sfu/intel-sw-dev
>> > _______________________________________________
>> > WiX-users mailing list
>> > WiX-users@lists.sourceforge.net
>> > https://lists.sourceforge.net/lists/listinfo/wix-users
>> >
>>
>>
>> ------------------------------------------------------------------------------
>> Download Intel® Parallel Studio Eval
>> Try the new software tools for yourself. Speed compiling, find bugs
>> proactively, and fine-tune applications for parallel performance.
>> See why Intel Parallel Studio got high marks during beta.
>> http://p.sf.net/sfu/intel-sw-dev
>> _______________________________________________
>> WiX-users mailing list
>> WiX-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/wix-users
>>
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> WiX-users mailing list
> WiX-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/wix-users
>
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