模拟键盘 驱动

void CKeyOperate::KBCWait4IBE()
{
    DWORD dwVal = 0;
    do
    {
        dwVal = _inp(KBC_KEY_CMD);
    }
    while ((dwVal & 0x2) > 0); // 缓冲区满则继续等待，空则退出，
}

//模拟键盘按下和弹起
void CKeyOperate::keybd_eventEx(IN BYTE bVk,IN BYTE bScan,IN DWORD dwFlags,IN ULONG_PTR dwExtraInfo)
{
    long   btScancode;
    btScancode   =   MapVirtualKey(bVk,0);

    if (dwFlags & KEYEVENTF_KEYUP)
    {
        btScancode |= 0x80;
    }

    if (dwFlags & KEYEVENTF_EXTENDEDKEY)
    {
        KBCWait4IBE();       //等待键盘缓冲区为空
        _outp(KBC_KEY_CMD,0xD2);       //发送键盘写入命令
        KBCWait4IBE();
        _outp(KBC_KEY_DATA,0xE0);   //写入扩展键标志信息
    }

    KBCWait4IBE();                    //等待键盘缓冲区为空
    _outp(KBC_KEY_CMD,0xD2);       //发送键盘写入命令
    KBCWait4IBE();
    _outp(KBC_KEY_DATA,btScancode);   //写入扩展键标志信息
}