Geoff Chappell - Software Analyst
This function deletes a value in a subkey of a shell key.
HRESULT SKDeleteValueW ( SHELLKEY nShellKey, LPCWSTR pszSubKey, LPCWSTR pszValue);
The nShellKey argument specifies the shell key as a constant from the SHELLKEY enumeration.
The pszSubKey argument provides the address of a null-terminated string that names the subkey, or is NULL for the shell key itself.
The pszValue argument provides the address of a null-terminated string that names the value, or is NULL for the default value.
The function returns zero for success, else an error code.
The function creates the given subkey of the selected shell key (using SHGetShellKeyEx, asking for KEY_SET_VALUE access), deletes the given value, and closes the subkey.
In builds before Windows Vista, the subkey is opened by using SHGetShellKey.
The SKDeleteValueW function is exported from SHLWAPI as ordinal 518 in version 6.00 and higher.
Though this function dates from 2001, it was still not documented by Microsoft as late as the January 2007 edition of the Windows Vista Software Development Kit (SDK).