Hi Wix-users,
I am curious about the best-practice way to update a registry key in HKLM. I
would like to set
<RegistryValue Root='HKLM'
Key="SYSTEM\CurrentControlSet\Control\Print\Providers"
Type='integer' Action='write' Name="EventLog" Value='7' />
If I simply set it from a component with other (HKCU) RegistryValues
and ignore the resulting warning ("warning LGHT1076 : ICE57: Component
'...' has both per-user and per-machine data with an HKCU Registry
KeyPath."), then Windows Installer will remove the key _entirely_ when
I remove the product. Since the key is typically set to something
beforehand, that's not the behavior I want.
(Ideally, the key would be restored to its original value on
uninstallation, but I suspect this would require copying the key to my
own registry entry, then setting a custom action to call reg.exe to
set the key back to the original value when the product is
uninstalled.)
If I pull the RegistryValue tag into its own component and mark it with
Permanent="yes", then I get ICE38 errors:
<Component Permanent="yes" Id="ProgramRegUpdate" Guid="...">
<RegistryValue Root='HKLM'
Key="SYSTEM\CurrentControlSet\Control\Print\Providers"
Type='integer' Action='write' Name="EventLog"
Value='7' />
</Component>
error LGHT0204 : ICE38: Component ProgramRegUpdate installs to user profile.
It's KeyPath registry key must fall under HKCU.
I've read on this list that one way to avoid ICE38 is to create a
dummy registry key and set the keypath to that, but then (a) I'd have
a permanent dummy key hanging around and (b) that defeats the purpose
of the KeyPath -- I would like the _actual_ HKLM key to be checked by
Windows Installer, not the dummy.
I assume I'm either approaching this the wrong way or I haven't
stumbled on the best-practice solution. I'm curious if anyone has any
pointers.
Thanks in advance!
Joe
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