[wix-users] Heat not working with DirectShow filters (but it used to!)
bill.arnette at signalscape.com
Thu Jun 1 09:31:11 PDT 2017
Back in the day I used Heat to harvest COM registry information from DirectShow filters and ran into this issue:
Note that the issue indicates I was able to work with heat 3.0
Now I need to add some more DirectShow filters to the installer but when I run heat I get the following (even with heat 3.0):
PS C:\Projects\VS2012\Interviewer\trunk> heat file .\src\bin\Release\SampleGrabber.dll -o tmp.wxs
Windows Installer XML Toolset Toolset Harvester version 184.108.40.2066
Copyright (c) Outercurve Foundation. All rights reserved.
heat.exe : warning HEAT5150 : Could not harvest data from a file that was expected to be a SelfReg DLL: C:\Projects\VS2012\Interviewer\trunk\src\bin\Release\SampleGrabber.dll. If this file does not support SelfReg you can ignore this warning. Otherwise, this error detail may be helpful to diagnose the failure: Exception has been thrown by the target of an invocation.
I downloaded the source for Wix and debugged into my filter's DllRegisterServer function and found that it is returning E_CLASSNOTREGISTERED. The issue is:
1. DirectShow filters make use of a FilterMapper2 COM object (CLSID_FilterMapper2) during registration
2. CoCreateInstance of the FilterMapper2 object returns E_CLASSNOTREGISTERED because the registry entries for the FilterMapper2 object do not exist in the re-directed HKCR/HKLM registry keys.
I understand why this is failing now, but what is confusing is that this worked in 2013. I have tried both WiX 3.0 as well as WiX 3.10 under both Windows 10 and Windows 7 (what I would have been using at that time it last worked).
Principal Software Developer
StarWitness Business Unit
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