If I want to create the registry key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\MyApp
with the string value
EventMessageFile : C:\Path\To\File.dll
how do I define this in my WiX 3.0 WXS file? Examples of what the XML should look like is much appreciated.
You seem to want to create an event log source. If that is the case, you should take a look at the <EventSource> element in the util extension.
Check out this page. An example would be:
<registry action="write"
root"HKLM" key="SYSTEM\CurrentControlSet\Services\Eventlog\Application\MyApp"
type="string" value="EventMessageFile : C:\Path\To\File.dll" />
I went with this:
<Component Id="EventLogRegKeys" Guid="{my guid}">
<RegistryKey Id="Registry_EventLog" Root="HKLM" Key="SYSTEM\CurrentControlSet\Services\Eventlog\Application\MyApp" Action="create">
<RegistryValue Id="Registry_EventLog_EventSourceDll" Action="write" KeyPath="yes" Name="EventMessageFile" Type="string" Value="C:\Path\To\File.dll" />
</RegistryKey>
</Component>
It would be better to refer to File.dll using file reference syntax, to ensure that the actual path it's installed to is used. Use [#filekey], where filekey is the Id of the File element describing the file.
Use the following under DirectoryRef --> Directory...
<Component Id="RegisterAddReferencesTab32" Guid="D9D01248-8F19-45FC-B807-093CD6765A60"> <RegistryValue Action="write" Id="RegInstallDir32" Key="HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\Application\MyApp" Root="HKLM" Type="string" Value="C:\Path\To\File.dll" /></Component>
