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Windows Installer FAQ (the basics)
Dual Purpose Packages
Windows Installer Basics: Dual Purpose Packages |
A Dual Purpose Package (DPP) uses Single Package Authoring to create a package
that can install per-user or per-machine.
In Windows 7 onwards the "MSIINSTALLPERUSER" propery and
other Windows Installer 5.0+ enhancements makes this a relatively simple
process but this will be more completed in prior operating systems as shown
in the
"TryMeDualPurposePackage-SupportsWinXP.MM" example.
Prior to Windows Installer 5.0 properties such as "ProgramFilesFolder"
always pointed to per-machine locations even when installing per-user and so
these can't be used when supporting older operating systems.
This is some
Microsoft documentation on Single Package Authoring,
some other links: