[CMAKE]

[reactos.git] / dll / win32 / kernel32 / misc / env.c

diff --git a/dll/win32/kernel32/misc/env.c b/dll/win32/kernel32/misc/env.c
index b132abf..3ff452b 100644 (file)
--- a/dll/win32/kernel32/misc/env.c
+++ b/dll/win32/kernel32/misc/env.c
@@ -5,6 +5,8 @@
  * FILE:            lib/kernel32/misc/env.c
  * PURPOSE:         Environment functions
  * PROGRAMMER:      Ariadne ( ariadne@xs4all.nl)
+ *                  Emanuele Aliberti
+ *                  Thomas Weidenmueller
  * UPDATE HISTORY:
  *                  Created 01/11/98
  */
@@ -17,6 +19,85 @@
 
 /* FUNCTIONS ******************************************************************/
 
+/*
+ * @implemented
+ */
+BOOL
+WINAPI
+Beep (DWORD dwFreq, DWORD dwDuration)
+{
+    HANDLE hBeep;
+    UNICODE_STRING BeepDevice;
+    OBJECT_ATTRIBUTES ObjectAttributes;
+    IO_STATUS_BLOCK IoStatusBlock;
+    BEEP_SET_PARAMETERS BeepSetParameters;
+    NTSTATUS Status;
+
+    /* check the parameters */
+    if ((dwFreq >= 0x25 && dwFreq <= 0x7FFF) ||
+        (dwFreq == 0x0 && dwDuration == 0x0))
+    {
+        /* open the device */
+        RtlInitUnicodeString(&BeepDevice,
+                             L"\\Device\\Beep");
+
+        InitializeObjectAttributes(&ObjectAttributes,
+                                   &BeepDevice,
+                                   0,
+                                   NULL,
+                                   NULL);
+
+        Status = NtCreateFile(&hBeep,
+                              FILE_READ_DATA | FILE_WRITE_DATA,
+                              &ObjectAttributes,
+                              &IoStatusBlock,
+                              NULL,
+                              0,
+                              FILE_SHARE_READ | FILE_SHARE_WRITE,
+                              FILE_OPEN_IF,
+                              0,
+                              NULL,
+                              0);
+        if (NT_SUCCESS(Status))
+        {
+            /* Set beep data */
+            BeepSetParameters.Frequency = dwFreq;
+            BeepSetParameters.Duration = dwDuration;
+
+            Status = NtDeviceIoControlFile(hBeep,
+                                           NULL,
+                                           NULL,
+                                           NULL,
+                                           &IoStatusBlock,
+                                           IOCTL_BEEP_SET,
+                                           &BeepSetParameters,
+                                           sizeof(BEEP_SET_PARAMETERS),
+                                           NULL,
+                                           0);
+
+            /* do an alertable wait if necessary */
+            if (NT_SUCCESS(Status) &&
+                (dwFreq != 0x0 || dwDuration != 0x0) && dwDuration != MAXDWORD)
+            {
+                SleepEx(dwDuration,
+                        TRUE);
+            }
+
+            NtClose(hBeep);
+        }
+    }
+    else
+        Status = STATUS_INVALID_PARAMETER;
+
+    if (!NT_SUCCESS(Status))
+    {
+        SetLastErrorByStatus (Status);
+        return FALSE;
+    }
+
+    return TRUE;
+}
+
 /*
  * @implemented
  */