Key

        pub const Key = packed struct(u16) {
            /// Required to query the values of a registry key.
            QUERY_VALUE: bool = false,
            /// Required to create, delete, or set a registry value.
            SET_VALUE: bool = false,
            /// Required to create a subkey of a registry key.
            CREATE_SUB_KEY: bool = false,
            /// Required to enumerate the subkeys of a registry key.
            ENUMERATE_SUB_KEYS: bool = false,
            /// Required to request change notifications for a registry key or for subkeys of a registry key.
            NOTIFY: bool = false,
            /// Reserved for system use.
            CREATE_LINK: bool = false,
            Reserved6: u2 = 0,
            /// Indicates that an application on 64-bit Windows should operate on the 64-bit registry view.
            /// This flag is ignored by 32-bit Windows.
            WOW64_64KEY: bool = false,
            /// Indicates that an application on 64-bit Windows should operate on the 32-bit registry view.
            /// This flag is ignored by 32-bit Windows.
            WOW64_32KEY: bool = false,
            Reserved10: u6 = 0,

            pub const WOW64_RES: ACCESS_MASK = .{
                .SPECIFIC = .{ .KEY = .{
                    .WOW64_32KEY = true,
                    .WOW64_64KEY = true,
                } },
            };

            /// Combines the STANDARD_RIGHTS_READ, KEY_QUERY_VALUE, KEY_ENUMERATE_SUB_KEYS, and KEY_NOTIFY values.
            pub const READ: ACCESS_MASK = .{
                .STANDARD = .{
                    .RIGHTS = .READ,
                    .SYNCHRONIZE = false,
                },
                .SPECIFIC = .{ .KEY = .{
                    .QUERY_VALUE = true,
                    .ENUMERATE_SUB_KEYS = true,
                    .NOTIFY = true,
                } },
            };

            /// Combines the STANDARD_RIGHTS_WRITE, KEY_SET_VALUE, and KEY_CREATE_SUB_KEY access rights.
            pub const WRITE: ACCESS_MASK = .{
                .STANDARD = .{
                    .RIGHTS = .WRITE,
                    .SYNCHRONIZE = false,
                },
                .SPECIFIC = .{ .KEY = .{
                    .SET_VALUE = true,
                    .CREATE_SUB_KEY = true,
                } },
            };

            /// Equivalent to KEY_READ.
            pub const EXECUTE = READ;

            pub const ALL_ACCESS: ACCESS_MASK = .{
                .STANDARD = .{
                    .RIGHTS = .ALL,
                    .SYNCHRONIZE = false,
                },
                .SPECIFIC = .{ .KEY = .{
                    .QUERY_VALUE = true,
                    .SET_VALUE = true,
                    .CREATE_SUB_KEY = true,
                    .ENUMERATE_SUB_KEYS = true,
                    .NOTIFY = true,
                    .CREATE_LINK = true,
                } },
            };
        }