Re: [ros-kernel] Registry links demystfied

[Casper H. <ch...@us...>]

tir, 2002-06-18 kl. 15:42 skrev Eric Kohl:
> Hi!
> 
> 
> HKEY hKeyHandle;
> DWORD dwDisposition;
> DWORD dwLength;
> 
> PWCHAR ValueName = L"SymbolicLinkValue";
> PWCHAR Buffer= L"\\Registry\\Machine\\SOFTWARE\\SMT";
> 
> /* create the key */
> RegCreateKeyExW(HKEY_LOCAL_MACHINE,
>       L"SOFTWARE\\Test\\Link",
>       0,
>       NULL,
>       REG_OPTION_VOLATILE | REG_OPTION_CREATE_LINK,
>       KEY_ALL_ACCESS | KEY_CREATE_LINK,
>       NULL,
>       &hKeyHandle,
>       &dwDisposition);
> 
> /* Note: length WITHOUT the terminating zero */
> dwLength = wcslen(Buffer) * sizeof(WCHAR);
> 
> /* set the link value */
> RegSetValueExW(hKeyHandle,
>      ValueName,
>      0,
>      REG_LINK,
>      (const BYTE *)Buffer,
>      dwLength);
> 
> RegCloseKey(hKeyHandle);
> 
> 
> I still have to find out whether registry links can be removed or changed.
> 
> 
> Regards,
> Eric

Great. IIRC symbolic registry links are volatile and must be recreated
after each boot. Does your tests confirm this?

Casper