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danjal
Level 5
‎Mar 04, 2008 04:29 AM

Determent if it is an upgrade

I have a InstallScript MSI Project.
I want too be able, in a script, to determent weather an installation is a first time installation or an upgrade from a previous installation.

I have tried IS_SMALL_UPGRADE and IS_MINOR_UPGRADE, but the compiler does not recognize this properties.

Can anyone help me?
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danjal
Level 5
‎Mar 06, 2008 02:57 AM

I have figured out that if the message “This setup will perform an upgrade of…” appears I can put that special script in the event OnResumeUIBefore().

But is this the right way to do it?
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