Forum Discussion
How to query for installed packaged COM extension points?
I've already investigated using https://docs.microsoft.com/en-us/uwp/api/windows.management.deployment.packagemanager.findpackagesforuser to detect installed packages and parsing the associated manifest files for https://docs.microsoft.com/en-us/uwp/schemas/appxpackage/uapmanifestschema/element-com-comserver tags. However, it seem like a rather clunky approach to me. Having some sort of Windows API for querying the "Packaged COM" catalog for installed COM servers would make everything much simpler.
forderud80 Thank you for your question. We do have a public API that might help (ICatInformation::EnumClassesOfCategories (comcat.h) - Win32 apps | Microsoft Docs) for enumerating CLSIDs of:
- classes that implement a specified category, or
- all classes (by asking for -1 categories)
The results include both classes in HKCR\CLSID and Packaged COM, but there is no public API for querying Packaged COM specifically.
3 Replies
Aditi_NarvekarMicrosoft
forderud80 Thank you for your question. We do have a public API that might help (ICatInformation::EnumClassesOfCategories (comcat.h) - Win32 apps | Microsoft Docs) for enumerating CLSIDs of:
- classes that implement a specified category, or
- all classes (by asking for -1 categories)
The results include both classes in HKCR\CLSID and Packaged COM, but there is no public API for querying Packaged COM specifically.
Thanks a lot Aditi! This was exactly what I'm looking for. 🙂
Do you know if there are also APIs for querying registry metadata for a COM class like Version, InprocServer32/LocalServer32 paths etc. that will include the Packaged COM catalog?- I've now moved the "Version" metadata question to a separate post on https://techcommunity.microsoft.com/t5/msix-deployment/how-to-query-com-class-version-for-packaged-com-extension-points/m-p/3153990
