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/*
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "stdafx.h"
// Globals
extern BYTE bEmulateKeypresses;
HANDLE hKbdDev[10] = {INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE};
// Defines
#define MAX_KBDHANDLES 10
#define IOCTL_KEYBOARD_SET_INDICATORS CTL_CODE(FILE_DEVICE_KEYBOARD, 0x0002, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_KEYBOARD_QUERY_TYPEMATIC CTL_CODE(FILE_DEVICE_KEYBOARD, 0x0008, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define IOCTL_KEYBOARD_QUERY_INDICATORS CTL_CODE(FILE_DEVICE_KEYBOARD, 0x0010, METHOD_BUFFERED, FILE_ANY_ACCESS)
typedef struct _KEYBOARD_INDICATOR_PARAMETERS {
USHORT UnitId; // Unit identifier.
USHORT LedFlags; // LED indicator state.
} KEYBOARD_INDICATOR_PARAMETERS, *PKEYBOARD_INDICATOR_PARAMETERS;
BOOL OpenKeyboardDevice()
{
int i = 0;
TCHAR aux1[MAX_PATH+1], aux2[MAX_PATH+1];
do {
mir_sntprintf(aux1, _countof(aux1), _T("Kbd%d"), i);
mir_sntprintf(aux2, _countof(aux2), _T("\\Device\\KeyboardClass%d"), i);
DefineDosDevice(DDD_RAW_TARGET_PATH, aux1, aux2);
mir_sntprintf(aux1, _countof(aux1), _T("\\\\.\\Kbd%d"), i);
hKbdDev[i] = CreateFile(aux1, GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
} while (hKbdDev[i] != INVALID_HANDLE_VALUE && ++i < MAX_KBDHANDLES);
return hKbdDev[0] != INVALID_HANDLE_VALUE;
}
BOOL ToggleKeyboardLights(BYTE byte)
{
int i; BOOL result = FALSE;
KEYBOARD_INDICATOR_PARAMETERS InputBuffer; // Input buffer for DeviceIoControl
ULONG DataLength = sizeof(KEYBOARD_INDICATOR_PARAMETERS);
ULONG ReturnedLength; // Number of bytes returned in output buffer
if (bEmulateKeypresses)
return keypresses_ToggleKeyboardLights(byte);
InputBuffer.UnitId = 0;
InputBuffer.LedFlags = byte;
for (i=0; i < MAX_KBDHANDLES && hKbdDev[i] != INVALID_HANDLE_VALUE; i++)
result |= DeviceIoControl(hKbdDev[i], IOCTL_KEYBOARD_SET_INDICATORS, &InputBuffer, DataLength, NULL, 0, &ReturnedLength, NULL);
return result;
}
void CloseKeyboardDevice()
{
int i = 0;
TCHAR aux[MAX_PATH+1];
do {
if (hKbdDev[i] != INVALID_HANDLE_VALUE)
CloseHandle(hKbdDev[i]);
mir_sntprintf(aux, _countof(aux), _T("Kbd%d"), i);
DefineDosDevice(DDD_REMOVE_DEFINITION, aux, NULL);
} while (hKbdDev[i] != INVALID_HANDLE_VALUE && ++i < MAX_KBDHANDLES);
}
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