shlwapi.pp SHRegGetValueFromHKCUHKLM definition problem
lazarus / 67-Windows

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440bx · 2025-08-14 07:20

MS claims SHRegGetValueFromHKCUHKLM is no longer supported. 
Documentation link:
https://learn.microsoft.com/en-us/windows/win32/api/shlwapi/nf-
shlwapi-shreggetvaluefromhkcuhklm

However, in Win7 it is present as unnamed ordinal 629.  In Win 11, it
is exported by name but the implementation is a jump to "somewhere"
(likely kernelbase or advapi32, untested since I don't have Win 11
running.)

shlwapi.pp declares it but, given the "erratic" existence of the
function a warning about using it would probably be appropriate.

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Remy Lebeau · 2025-08-16 17:09

Interesting. I've being using the Registry API for decades and never
knew this function existed.

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440bx · 2025-08-16 17:29

It is amazing the _mess_ MS has made in shell32 and shlwapi. 

You've got to see it to believe it.

Plenty of interesting functions though.  Sometimes there are even as
many as 3 or 4 ways of invoking the same function, combination of
multiple names for the same entry point and undocumented ordinals that
jump  to the same entry point.  Go figure!.

MS has been claiming that some functions are either not present past a
certain version of Windows or may not be present in some future
version, yet many of them are implemented from Win XP to Win 11 (some
even from Win 9x).