function RegQueryMultiStringValue(const RootKey: Integer; const SubKeyName, ValueName: String; var ResultStr: String): Boolean;
Queries the specified REG_MULTI_SZ-type registry value, and returns the data in ResultStr. Returns True if successful. When False is returned, ResultStr is unmodified.
In a REG_MULTI_SZ-type value, each string is separated by a null character (#0).