1 files changed, 59 insertions, 0 deletions
diff --git a/public/sdk/inc/ntddbeep.h b/public/sdk/inc/ntddbeep.h
new file mode 100644
index 000000000..daaf98931
--- /dev/null
+++ b/public/sdk/inc/ntddbeep.h
@@ -0,0 +1,59 @@
+/*++ BUILD Version: 0001    // Increment this if a change has global effects
+
+Copyright (c) 1990-1993  Microsoft Corporation
+
+Module Name:
+
+    ntddbeep.h
+
+Abstract:
+
+    This is the include file that defines all constants and types for
+    the beep device.
+
+Author:
+
+    Lee A. Smith (lees) 02-Aug-1991.
+
+Revision History:
+
+--*/
+
+#ifndef _NTDDBEEP_
+#define _NTDDBEEP_
+
+//
+// Device Name - this string is the name of the device.  It is the name
+// that should be passed to NtOpenFile when accessing the device.
+//
+// Note:  For devices that support multiple units, it should be suffixed
+//        with the Ascii representation of the unit number.
+//
+
+#define DD_BEEP_DEVICE_NAME    "\\Device\\Beep"
+#define DD_BEEP_DEVICE_NAME_U L"\\Device\\Beep"
+
+//
+// NtDeviceIoControlFile IoControlCode values for this device.
+//
+// Warning:  Remember that the low two bits of the code specify how the
+//           buffers are passed to the driver!
+//
+
+#define IOCTL_BEEP_SET CTL_CODE(FILE_DEVICE_BEEP, 0, METHOD_BUFFERED, FILE_ANY_ACCESS)
+
+//
+// NtDeviceIoControlFile OutputBuffer record structures for
+// IOCTL_BEEP_SET.
+//
+
+typedef struct _BEEP_SET_PARAMETERS {
+    ULONG Frequency;
+    ULONG Duration;
+} BEEP_SET_PARAMETERS, *PBEEP_SET_PARAMETERS;
+
+#define BEEP_FREQUENCY_MINIMUM 0x25
+#define BEEP_FREQUENCY_MAXIMUM 0x7FFF
+
+#endif // _NTDDBEEP_
+