I know this has been asked and answered about a zillion times and that I
probably can find the information somewhere on the mailing list. The
problem is I don't know how to limit my search, so I get roughly 1500
hits. It's like searching for the proverbial needle in a haystack.
I try to do it exactly it says in the WiX help file, but it doesn't seem
to work like I want. It is probably something simple, but I can't see
it.
What I want is an installer that automatically uninstalls a previous
version of the same product and installs the new version. In addition it
should detect whether a newer version already exists, and if so abort
the installation. In other words, no downgrading.
But for some reason, I just get two versions of the same product
installed in the same folder. Mind you, this is the first version, so
although there is nothing to upgrade yet, I would like the logic to be
in place before shipping.
My WiX is like this (the relevant bits):
<?define MinVersion="1.0.0" ?>
<?define MaxVersion="1.0.1" ?>
<?define CurVersion="1.0.1" ?>
<Product Id="*"
Name="!(loc.ApplicationName)"
Language="!(loc.ProductLanguage)"
Version="$(var.CurVersion)"
Manufacturer="!(loc.CompanyName)"
Codepage="1252"
UpgradeCode="DC776FD7-DF88-4F7F-A241-6F9233C2A997">
<Package Platform="x86"
Manufacturer="!(loc.CompanyName)"
InstallPrivileges="elevated"
Description="!(loc.PackageDescription)"
InstallScope="perMachine"
InstallerVersion="301"
Compressed="yes" />
<Upgrade Id="214E215F-7633-421E-A7D8-FD5DB5992709" >
<UpgradeVersion Minimum="$(var.MinVersion)"
Maximum="$(var.MaxVersion)"
IncludeMinimum="yes"
Property="MYAPPVERSION" />
<UpgradeVersion Minimum="$(var.MaxVersion)"
OnlyDetect="yes"
Property="NEWERVERSIONDETECTED" />
</Upgrade>
<InstallUISequence>
<LaunchConditions After="AppSearch"/>
</InstallUISequence>
<InstallExecuteSequence>
<RemoveExistingProducts After="InstallInitialize"/>
<LaunchConditions After="AppSearch"/>
</InstallExecuteSequence>
<!-- Irrelevant stuff here -->
</Product>
I plan to simply change the CurVersion and MaxVersion variables between
releases, so I don't have to change several entries and risk missing
one.
Best regards,
Thomas Due
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