keyboard_win32.cpp

这是DVD中伺服部分的核心代码

/******************************************************************************
*******************************************************************************
**                                                                           **
**  Copyright (c) 2006 Videon Central, Inc.                                  **
**  All rights reserved.                                                     **
**                                                                           **
**  The computer program contained herein contains proprietary information   **
**  which is the property of Videon Central, Inc.  The program may be used   **
**  and/or copied only with the written permission of Videon Central, Inc.   **
**  or in accordance with the terms and conditions stipulated in the         **
**  agreement/contract under which the programs have been supplied.          **
**                                                                           **
*******************************************************************************
******************************************************************************/
/**
 * @file keyboard_windows.cpp
 *
 * $Revision: 1.2 $ 
 *
 * keyboard i/o on windows platform
 *
 */

#include "keyboard.h"
#include "dbgprint.h"
#include <conio.h>





/**
 *******************************************************************************
 *  Keyboard_Open prepares for keyboard input/output
 *
 *******************************************************************************/
void Keyboard_Open ( void )
{
}






/**
 *******************************************************************************
 *  Keyboard_Close releases any resources obtained for keyboard input/output
 *
 *******************************************************************************/
void Keyboard_Close ( void )
{
}






/**
 *******************************************************************************
 *  Keyboard_IsKeyAvailable checks if a key has been pressed on the keyboard
 *
 *  @return     TRUE if the keyboard has been pressed, FALSE otherwise
 *******************************************************************************/
BOOLEAN Keyboard_IsKeyAvailable( void )
{
    if ( _kbhit() != 0 )
    {
        return ( TRUE );
    }

    return ( FALSE );
}






/**
 *******************************************************************************
 *  Keyboard_GetKey returns next available key from keyboard.
 *  NOTE: This routine will block if no key is available until the keyboard is pressed
 *
 *  @return     keycode as a KeyboardKeycodeType
 *******************************************************************************/
KeyboardKeycodeType Keyboard_GetKey ( void )
{
    int rawKeycode;

    rawKeycode = _getch(); 
    if ( rawKeycode == 0xE0 ) 
    {
        rawKeycode = rawKeycode << 8;
        rawKeycode = rawKeycode | _getch();
    }

    switch ( rawKeycode ) 
    {
        case 0xE04b:    return ( KEYBOARD_KEYCODE_LEFT_ARROW );
        case 0xE048:    return ( KEYBOARD_KEYCODE_UP_ARROW );
        case 0xE050:    return ( KEYBOARD_KEYCODE_DOWN_ARROW );
        case 0xE04d:    return ( KEYBOARD_KEYCODE_RIGHT_ARROW );
        case 13:        return ( KEYBOARD_KEYCODE_ENTER );
        case 32:        return ( KEYBOARD_KEYCODE_SPACEBAR );

        default:

            return ( (KeyboardKeycodeType)rawKeycode );

        break;
    }
}