What are some good resources for understanding how Features work? Every time I
try to read through the Windows Installer documentation I get a headache and
feel more confused than when I began… or at least I feel that way as it relates
to Features. I’ll explain what I want in case somebody can help me understand
it better. I believe Features are supposed to work like this but I’m having a
hard time figuring out what I need to set and to what values.
I will have a relatively shallow feature tree that roughly looks like the
following:
<Feature Id="F.All">
<Feature Id="F.A">
<Feature Id="F.A.1">
<ComponentGroupRef Id="..."/>
</Feature>
<Feature Id="F.A.2">
<ComponentGroupRef Id="..."/>
</Feature>
<Feature Id="F.A.3">
<ComponentGroupRef Id="..."/>
</Feature>
<Feature Id="F.A.4">
<ComponentGroupRef Id="..."/>
</Feature>
<Feature Id="F.A.5">
<ComponentGroupRef Id="..."/>
</Feature>
</Feature>
<Feature Id="F.B">
<ComponentGroupRef Id="..."/>
</Feature>
<Feature Id="F.C">
<Feature Id="F.C.1">
<ComponentGroupRef Id="..."/>
</Feature>
<Feature Id="F.C.2">
<ComponentGroupRef Id="..."/>
</Feature>
</Feature>
</Feature>
The installer will not have a UI so the user will need to select the desired
features on the command line.
No feature is selected by default.
The installer should not execute if the user does not select at least one
feature. (Is this expressible with a LaunchCondition?)
When a _parent_ feature is selected then all child features should be selected
too. Example: If F.C is selected then F.C.1 and F.C.2 should be selected too.
If F.All is selected then all features should be selected.
Lastly, I want to use LaunchConditions to stop an installer if Properties
required by a feature are not set when that feature is selected. Example: F.A.3
requires P.F.A.3 is set and the installer should not execute if F.A.3 is
selected on the command line but P.F.A.3 is not set on the command line.
Edwin G. Castro
Software Developer - Staff
Electronic Banking Services
Fiserv
Office: 503-746-0643
Fax: 503-617-0291
www.fiserv.com
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