Hi all,
I learned today about the ARPINSTALLLOCATION property to make upgrade
easier. Since I did not use this in the previous version of the
installer, but am adding as a custom task in the new version, I need to
update my AppSearch process.
I sequenced the AppSearch after FindRelatedProducts to load my
PREVIOUSVERSIONFOUND property if the product was already installed.
Once I have this value, I can search the uninstall points in the
registry for the install location. However, if the value is blank,
which it will be for all installations until the new one, I also need to
perform the previous method of directory searching for a main file.
I am attempting to use this construct, but it does not end up filling
the TARGETDIR property when the Registry search returns a blank value;
<Property Id="TARGETDIR">
<RegistrySearch
Id="FindInstallLocation"
Root="HKLM"
Key="Software\Microsoft\Windows\CurrentVersion\Uninstall\[PREVIOUSVERSIO
NSINSTALLED]"
Name="InstallLocation"
Type="directory">
<DirectorySearch Id="targetDirSearch"
Depth="999">
<FileSearch Id="targetDirSearch"
Name="MyFileName.exe" />
</DirectorySearch>
</RegistrySearch>
</Property>
Ultimately, what I'd like to have happen is search the Registry first.
If that fails, then do the much longer search through the
DirectorySearch. Finally, I can display the full installation wizard
instead of the upgrade version.
Is this possible?
Thanks,
Christopher "Bones" Snider
Software Engineer
Warfighter's Edge (WEdge)
Institute for Information Technology Applications (IITA)
United States Air Force Academy
www.wedge.hpc.mil
chris.sni...@wedge.hpc.mil <mailto:r...@wedge.hpc.mil>
DSN 333-0654/ COMM 719-333-0654
Yahoo! IM: chris_snider
"The object-oriented model makes it easy to build up programs by
accretion. What this often means, in practice, is that it provides a
structured way to write spaghetti code."
- Paul Graham
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