[Bug 37833] BOINC uninstaller claims to be upgrading

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=37833

Anastasius Focht <focht at gmx.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |focht at gmx.net

--- Comment #1 from Anastasius Focht <focht at gmx.net> ---
Hello folks,

the strange behaviour is expected since Wine runs uninstallers in 'full UI'
mode.

Whoever authored the package didn't take 'full UI' mode on uninstall into
account.

Dumping the 'InstallUISequence' table of the .msi package with 'Orca' yields:

--- snip ---
...
InstallWelcome    Not Installed And (Not PATCH Or IS_MAJOR_UPGRADE)    1210

MaintenanceWelcome    Installed And Not RESUME And Not Preselected And Not
PATCH    1230

PatchWelcome    PATCH And Not IS_MAJOR_UPGRADE    1205

SetupResume    Installed And (RESUME Or Preselected) And Not PATCH    1220
...
--- snip ---

The 'Preselected' property is the culprit here.

It's set to '1' during resume of interrupted/suspended installation or when
'REMOVE' or various other properties are passed by command line
(http://msdn.microsoft.com/en-us/library/aa371194%28v=vs.85%29.aspx).

Uninstall causes 'REMOVE=ALL' to be passed hence 'Preselected' is always '1'.

On Windows, uninstall is usually run with 'basic UI' mode hence the original
dialog is never shown -> developer never noticed it.

My guess would be if you force the uninstaller to 'full UI' mode on Windows you
should get the same result.

--- snip ---
msiexec /x {D5F38128-79BF-4904-A3C9-D399537DAE80} /qf
--- snip ---

Which leaves the point if we really want to change the Wine's default behaviour
for uninstallers to 'basic UI' by passing '/qb'.

Regards

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