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Qu'est-ce que the difference entre the ShowSuperHidden and SuperHidden registre valeurs?

ayi

Under le registre clé:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

...il y a two well-documented valeurs that pertain vers le showing of hidden fichiers and dossiers in Windows Explorer.

The Hidden clé shows hidden fichiers when true, and hides them when false.

The ShowSuperHidden clé is generally acknowledged as its equivalent for "super hidden" (i.e. protected/système) fichiers; it shows super-hidden fichiers when true, and hides them when false.

That said, where does the SuperHidden valeur come in? Its name suggests it serait the natural analogue vers le Hidden clé, but documentation on it and what it does is non-existent as far as J'ai été able to tell.

Quel est le purpose du SuperHidden valeur, and how does it differ from ShowSuperHidden?

ayi

ShowSuperHidden, as we discovered, controls whether super-hidden (Hidden + Système) fichiers are displayed. As far as Je peux tell, SuperHidden controls rien and its existence is probably a programming erreur.

Using Process Monitor, I observed reads from and writes vers lese Registry valeurs. The seulement interaction avec SuperHidden was a write when the utilisateur opened the View tab du Dossier Options dialog. It received a 1 if super-hidden fichiers are displayed, 0 otherwise. It was jamais read, even when I terminated and redémarré Explorer.

Procmon provides the stack that led to a monitored operation (double-cliquez an event and consult the Stack tab), so I examined the DLL fichiers involved using IDA v5.0. The seulement relevant one avec a mention of SuperHidden was shell32.dll. The CachedShellState::SaveAdvancedSettings function problèmes a Registry write to that valeur and others in that clé, committing the current view paramètres.

Explorer apparemment calls that function avant showing the View tab. That's probably done to assurez-vous the Registry is consistent avec the current in-mémoire paramètres avant loading the current state du View options, though I admit I'm not 100% certain sur le reasoning. Anyway, the corresponding shell32.dll function CachedShellState::_GetAdvancedSettings problèmes a read depuis le correct valeur, ShowSuperHidden.

These disassembly listings are depuis le Windows 7 version of that DLL. In Windows 10, SuperHidden ne exist dans le Registry, and CachedShellState::SaveAdvancedSettings writes to ShowSuperHidden.

Therefore, I conclude that when programming the version of that function that comes avec Windows 7, a developer mistakenly omitted the Show in ShowSuperHidden, but the erreur was corrected along the way to Windows 10.

For the curious, the Dossier Options dialog n'est pas broken by this erreur parce que it consults the ValueName entry under each setting clé ici:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder

Working out the significance du other parts of that branch is left as a (fun!) exercise vers le reader.