Read registry keys recursively

[Era Scarecrow via Digitalmars-d-learn]

On Sunday, 29 May 2016 at 15:48:49 UTC, TheDGuy wrote:
> Hello,
> i am wondering what is wrong with my code:
>
> import std.windows.registry;
> import std.stdio;
>
> void main(){
>     Key lclM = Registry.localMachine();
>     Key hrdw = lclM.getKey("HARDWARE");
>     writeRegistryKeys(hrdw);
> }
>
> void writeRegistryKeys(Key k){
>     foreach(Key key; k.keys){
>         writeRegistryKeys(key.getKey(key.name()));
>     }
>     writeln(k.name());
> }
>
> i get: 
> std.windows.registry.RegistryException at std\windows\registry.d(511): Failed to open requested key: "ACPI"
>
> Even though there is a key called 'ACPI' under 
> localmachine/hardware?

  Well this was a fun thing to figure out. Geez...

  You have everything good except for one line.
>         writeRegistryKeys(key.getKey(key.name()));

Let's translate that. Assume key = ACPI... SO...

  ACPI.getkey("ACPI")

  you should see the problem. Here's the correct line!

           writeRegistryKeys(k.getKey(key.name()));