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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
PURPOSE.
Module Name:
KBFTEST.C
Abstract:
Environment:
usermode console application
--*/
#include <basetyps.h>
#include <stdlib.h>
#include <wtypes.h>
#include <initguid.h>
#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <ntddkbd.h>
#pragma warning(disable:4201)
#include <setupapi.h>
#include <winioctl.h>
#pragma warning(default:4201)
#include "..\sys\public.h"
//-----------------------------------------------------------------------------
// 4127 -- Conditional Expression is Constant warning
//-----------------------------------------------------------------------------
#define WHILE(constant) \
__pragma(warning(disable: 4127)) while(constant); __pragma(warning(default: 4127))
DEFINE_GUID(GUID_DEVINTERFACE_KBFILTER,
0x3fb7299d, 0x6847, 0x4490, 0xb0, 0xc9, 0x99, 0xe0, 0x98, 0x6a, 0xb8, 0x86);
// {3FB7299D-6847-4490-B0C9-99E0986AB886}
int
_cdecl
main(
_In_ int argc,
_In_ char *argv[]
)
{
HDEVINFO hardwareDeviceInfo;
SP_DEVICE_INTERFACE_DATA deviceInterfaceData;
PSP_DEVICE_INTERFACE_DETAIL_DATA deviceInterfaceDetailData = NULL;
ULONG predictedLength = 0;
ULONG requiredLength = 0, bytes=0;
HANDLE file;
ULONG i =0;
KEYBOARD_ATTRIBUTES kbdattrib;
UNREFERENCED_PARAMETER(argc);
UNREFERENCED_PARAMETER(argv);
//
// Open a handle to the device interface information set of all
// present toaster class interfaces.
//
hardwareDeviceInfo = SetupDiGetClassDevs (
(LPGUID)&GUID_DEVINTERFACE_KBFILTER,
NULL, // Define no enumerator (global)
NULL, // Define no
(DIGCF_PRESENT | // Only Devices present
DIGCF_DEVICEINTERFACE)); // Function class devices.
if(INVALID_HANDLE_VALUE == hardwareDeviceInfo)
{
printf("SetupDiGetClassDevs failed: %x\n", GetLastError());
return 0;
}
deviceInterfaceData.cbSize = sizeof (SP_DEVICE_INTERFACE_DATA);
printf("\nList of KBFILTER Device Interfaces\n");
printf("---------------------------------\n");
i = 0;
//
// Enumerate devices of toaster class
//
do {
if (SetupDiEnumDeviceInterfaces (hardwareDeviceInfo,
0, // No care about specific PDOs
(LPGUID)&GUID_DEVINTERFACE_KBFILTER,
i, //
&deviceInterfaceData)) {
if(deviceInterfaceDetailData) {
free (deviceInterfaceDetailData);
deviceInterfaceDetailData = NULL;
}
//
// Allocate a function class device data structure to
// receive the information about this particular device.
//
//
// First find out required length of the buffer
//
if(!SetupDiGetDeviceInterfaceDetail (
hardwareDeviceInfo,
&deviceInterfaceData,
NULL, // probing so no output buffer yet
0, // probing so output buffer length of zero
&requiredLength,
NULL)) { // not interested in the specific dev-node
if(ERROR_INSUFFICIENT_BUFFER != GetLastError()) {
printf("SetupDiGetDeviceInterfaceDetail failed %d\n", GetLastError());
SetupDiDestroyDeviceInfoList (hardwareDeviceInfo);
return FALSE;
}
}
predictedLength = requiredLength;
deviceInterfaceDetailData = malloc (predictedLength);
if(deviceInterfaceDetailData) {
deviceInterfaceDetailData->cbSize =
sizeof (SP_DEVICE_INTERFACE_DETAIL_DATA);
} else {
printf("Couldn't allocate %d bytes for device interface details.\n", predictedLength);
SetupDiDestroyDeviceInfoList (hardwareDeviceInfo);
return FALSE;
}
if (! SetupDiGetDeviceInterfaceDetail (
hardwareDeviceInfo,
&deviceInterfaceData,
deviceInterfaceDetailData,
predictedLength,
&requiredLength,
NULL)) {
printf("Error in SetupDiGetDeviceInterfaceDetail\n");
SetupDiDestroyDeviceInfoList (hardwareDeviceInfo);
free (deviceInterfaceDetailData);
return FALSE;
}
printf("%d) %s\n", ++i,
deviceInterfaceDetailData->DevicePath);
}
else if (ERROR_NO_MORE_ITEMS != GetLastError()) {
free (deviceInterfaceDetailData);
deviceInterfaceDetailData = NULL;
continue;
}
else
break;
} WHILE (TRUE);
SetupDiDestroyDeviceInfoList (hardwareDeviceInfo);
if(!deviceInterfaceDetailData)
{
printf("No device interfaces present\n");
return 0;
}
//
// Open the last toaster device interface
//
printf("\nOpening the last interface:\n %s\n",
deviceInterfaceDetailData->DevicePath);
file = CreateFile ( deviceInterfaceDetailData->DevicePath,
GENERIC_READ | GENERIC_WRITE,
0,
NULL, // no SECURITY_ATTRIBUTES structure
OPEN_EXISTING, // No special create flags
0, // No special attributes
NULL);
if (INVALID_HANDLE_VALUE == file) {
printf("Error in CreateFile: %x", GetLastError());
free (deviceInterfaceDetailData);
return 0;
}
//
// Send an IOCTL to retrive the keyboard attributes
// These are cached in the kbfiltr
//
if (!DeviceIoControl (file,
IOCTL_KBFILTR_GET_KEYBOARD_ATTRIBUTES,
NULL, 0,
&kbdattrib, sizeof(kbdattrib),
&bytes, NULL)) {
printf("Retrieve Keyboard Attributes request failed:0x%x\n", GetLastError());
free (deviceInterfaceDetailData);
CloseHandle(file);
return 0;
}
printf("\nKeyboard Attributes:\n"
" KeyboardMode: 0x%x\n"
" NumberOfFunctionKeys: 0x%x\n"
" NumberOfIndicators: 0x%x\n"
" NumberOfKeysTotal: 0x%x\n"
" InputDataQueueLength: 0x%x\n",
kbdattrib.KeyboardMode,
kbdattrib.NumberOfFunctionKeys,
kbdattrib.NumberOfIndicators,
kbdattrib.NumberOfKeysTotal,
kbdattrib.InputDataQueueLength);
free (deviceInterfaceDetailData);
CloseHandle(file);
return 0;
}
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