Improve COM ctor exception code for failing ProgIDs #17673
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The `$module_name` of `com::__construct()` can be a ProgID, ClassID or moniker. We first try `CLSIDFromString()`, and if that fails, we go ahead and try to treat the `$module_name` as a moniker. If that also fails, we throw an exception with the result of `MkParseDisplayName()` what would just be `MK_E_SYNTAX` if given a ProgID. This result is highly confusing for the common case where a ProgID is given, which is not registered (e.g. due to a typo). In this case, we use the original `HRESULT` (`CO_E_CLASSSTRING`) instead.
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The
$module_nameofcom::__construct()can be a ProgID, ClassID or moniker. We first tryCLSIDFromString(), and if that fails, we go ahead and try to treat the$module_nameas a moniker. If that also fails, we throw an exception with the result ofMkParseDisplayName()what would just beMK_E_SYNTAXif given a ProgID. This result is highly confusing for the common case where a ProgID is given, which is not registered (e.g. due to a typo). In this case, we use the originalHRESULT(CO_E_CLASSSTRING) instead.