In article <e66649032ad92b42901bf5835c76a27f5...@harwood.x2systems.com>,
"Neil Sleightholm" <n...@x2systems.com> writes:
> I have to admit to being confused! Looking at the built in WiX custom
> actions I see code like this in their wixlibs:
>
> <CustomAction Id="InstallSqlData" BinaryKey="ScaSchedule2"
> DllEntry="InstallSqlData" Execute="immediate" Return="check" />
^^^^^^^^^^^^^^
> <CustomAction Id="UninstallSqlData" BinaryKey="ScaSchedule2"
> DllEntry="UninstallSqlData" Execute="immediate" Return="check" />
^^^^^^^^^^^^^^^^
These define two CAs with different entry points into the same DLL.
> <InstallExecuteSequence>
> <Custom Action="UninstallSqlData" Before="RemoveFiles"
> Overridable="yes">NOT SKIPUNINSTALLSQLDATA AND VersionNT > 400</Custom>
> <Custom Action="InstallSqlData" After="InstallFiles"
> Overridable="yes">NOT SKIPINSTALLSQLDATA AND VersionNT > 400</Custom>
> </InstallExecuteSequence>
>
> Where is the detection or conditional calls in that? In most cases this
> seems to end up calling the same code but with a true/false code
> indicating install/uninstall.
The two have different code and different conditions (properties
SKIPUNINSTALLSQLDATA vs. SKIPINSTALLSQLDATA).
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