In article
<de33023b477fe44eaa71983f5279f6ce50fc456...@na-exmsg-c102.redmond.corp.microsoft.com>,
Rob Mensching <rob.mensch...@microsoft.com> writes:
> That looks much closer. Your last statement isn't _quite_ correct.
> The defe rred actions (rollback actions are deferred) are "scheduled"
> in the first pass of the Windows Installer. That's when the condition
> is evaluated and that's wh y the rollback action always (almost?) has
> the same condition as the "forward" action. The actions are executed
> during the "execution" second pass and if the y weren't scheduled they
> don't exist.
When I first started supporting rollback on my custom actions, I
concluded that you *always* want the rollback custom action to have the
same condition as the custom action. Otherwise, there's a chance you
could get one and not both. They always go together.
Also, you need to make sure that the rollback custom action is always
sequenced before the custom action it rolls back. Why? Because
otherwise, you could have the custom action run without its rollback
action being available.
To enforce this relationship, we adopted a naming convention for
custom actions like VendorXXX and for rollback custom actions
VendorXXXRollback. Then I wrote an ICE that checked that the
conditions between VendorXXX and VendorXXXRollback were consistent
and that VendorXXXRollback was sequenced before VendorXXX. (We used a
prefix that represented our company name, but I'm using the generic
text 'Vendor' here, but you get the idea.)
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
------------------------------------------------------------------------------
This SF.net email is sponsored by:
SourcForge Community
SourceForge wants to tell your story.
http://p.sf.net/sfu/sf-spreadtheword
_______________________________________________
WiX-users mailing list
WiX-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/wix-users
