Create a branch for cmake bringup.

svn path=/branches/cmake-bringup/; revision=48236

lib/sdk/crt/conio/kbhit.c

@@ -0,0 +1,101 @@
+/*
+ * COPYRIGHT:   See COPYING in the top level directory
+ * PROJECT:     ReactOS system libraries
+ * FILE:        lib/msvcrt/conio/kbhit.c
+ * PURPOSE:     Checks for keyboard hits
+ * PROGRAMERS:  Ariadne, Russell
+ * UPDATE HISTORY:
+ *              28/12/98: Created
+ *              27/9/08: An almost 100% working version of _kbhit()
+ */
+
+#include <precomp.h>
+
+static CRITICAL_SECTION CriticalSection;
+volatile BOOL CriticalSectionInitialized=FALSE;
+
+/*
+ * FIXME Initial keyboard char not detected on first punch
+ *
+ * @implemented
+ */
+
+int _kbhit(void)
+{
+    PINPUT_RECORD InputRecord = NULL;
+    DWORD NumberRead = 0;
+    DWORD EventsRead = 0;
+    DWORD RecordIndex = 0;
+    DWORD BufferIndex = 0;
+    HANDLE StdInputHandle = 0;
+    DWORD ConsoleInputMode = 0;
+
+    /* Attempt some thread safety */
+    if (!CriticalSectionInitialized)
+    {
+        InitializeCriticalSectionAndSpinCount(&CriticalSection, 0x80000400);
+        CriticalSectionInitialized = TRUE;
+    }
+
+    EnterCriticalSection(&CriticalSection);
+
+    if (char_avail)
+    {
+        LeaveCriticalSection(&CriticalSection);
+        return 1;
+    }
+
+    StdInputHandle = GetStdHandle(STD_INPUT_HANDLE);
+
+    /* Turn off processed input so we get key modifiers as well */
+    GetConsoleMode(StdInputHandle, &ConsoleInputMode);
+
+    SetConsoleMode(StdInputHandle, ConsoleInputMode & ~ENABLE_PROCESSED_INPUT);
+
+    /* Start the process */
+    if (!GetNumberOfConsoleInputEvents(StdInputHandle, &EventsRead))
+    {
+        LeaveCriticalSection(&CriticalSection);
+        return 0;
+    }
+
+    if (!EventsRead)
+    {
+        LeaveCriticalSection(&CriticalSection);
+        return 0;
+    }
+
+    if (!(InputRecord = (PINPUT_RECORD)malloc(EventsRead * sizeof(INPUT_RECORD))))
+    {
+        LeaveCriticalSection(&CriticalSection);
+        return 0;
+    }
+
+    if (!ReadConsoleInput(StdInputHandle, InputRecord, EventsRead, &NumberRead))
+    {
+        free(InputRecord);
+        LeaveCriticalSection(&CriticalSection);
+        return 0;
+    }
+
+    for (RecordIndex = 0; RecordIndex < NumberRead; RecordIndex++)
+    {
+        if (InputRecord[RecordIndex].EventType == KEY_EVENT &&
+            InputRecord[RecordIndex].Event.KeyEvent.bKeyDown)
+        {
+            BufferIndex = 1;
+            break;
+        }
+    }
+
+    free(InputRecord);
+
+    /* Restore console input mode */
+    SetConsoleMode(StdInputHandle, ConsoleInputMode);
+
+    LeaveCriticalSection(&CriticalSection);
+
+    return BufferIndex;
+}
+
+