VC學習:獲取游戲手柄的按鍵輸入

  //可以查看按游戲手柄按鈕時的情況.

  //USB接口的游戲手柄

  //編譯環境:Windows 2000 server+VC++ 6.0+Win2K DDK

  #include
  #include
  #include
  #include
  extern "C"
  {
  #include
  }

  void main()
  {
  GUID HidGuid;

  // 查找本系統中HID類的GUID標識
  HidD_GetHidGuid(&HidGuid);
  _tprintf("系統中HID類的GUID標識為:%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x ",
  HidGuid.Data1,HidGuid.Data2 ,HidGuid.Data3 ,
  HidGuid.Data4[0],HidGuid.Data4[1],HidGuid.Data4[2],
  HidGuid.Data4[3],HidGuid.Data4[4],HidGuid.Data4[5],
  HidGuid.Data4[6],HidGuid.Data4[7]);

  // 准備查找符合HID規范的USB設備
  HDEVINFO hDevInfo = SetupDiGetClassDevs(&HidGuid,
  NULL,
  NULL,
  DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
  if (hDevInfo == INVALID_HANDLE_VALUE)
  {
  _tprintf("符合HID規范的USB設備發生錯誤 ");

  return;
  }

  _tprintf("正在查找可用的USB設備... ");

  DWord MemberIndex = 0;
  SP_DEVICE_INTERFACE_DATA DeviceInterfaceData;
  BOOL bSuccess = FALSE;

  DeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
  do
  {
  bSuccess = SetupDIEnumDeviceInterfaces(hDevInfo,
  NULL,
  &HidGuid,
  MemberIndex,
  &DeviceInterfaceData);
  if ((!bSuccess) && (GetLastError() == ERROR_NO_MORE_ITEMS))
  {
  if(MemberIndex == 0)
  _tprintf("抱歉,未找到可用的USB設備! ");
  else
  _tprintf("沒有更多的可用的USB設備! ");

  SetupDiDestroyDeviceInfoList(hDevInfo);
  return;
  }
  _tprintf("找到了一個USB設備: ");
  //若找到了一個USB設備,則獲取該設備的細節信息
  PSP_DEVICE_INTERFACE_DETAIL_DATA pDeviceInterfaceDetailData;
  DWord Length = 0;
  SetupDiGetDeviceInterfaceDetail(hDevInfo,
  &DeviceInterfaceData,
  NULL,
  0,
  &Length,
  NULL);
  pDeviceInterfaceDetailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)malloc(Length);
  pDeviceInterfaceDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); //MUST BE!!!

  if (!SetupDiGetDeviceInterfaceDetail(hDevInfo,
  &DeviceInterfaceData,
  pDeviceInterfaceDetailData,
  Length,
  NULL,
  NULL))
  _tprintf("查找路徑設備時出錯! ");
  else
  _tprintf("設備路徑:%s ",pDeviceInterfaceDetailData->DevicePath );

  //打開設備句柄
  HANDLE hDeviceHandle = CreateFile(pDeviceInterfaceDetailData->DevicePath ,
  GENERIC_READ | GENERIC_WRITE,
  FILE_SHARE_READ | FILE_SHARE_WRITE,
  NULL,
  OPEN_EXISTING,
  0,
  NULL);
  if (hDeviceHandle == INVALID_HANDLE_VALUE)
  _tprintf("打開設備路徑出錯! ");
  else

  {
  HIDD_ATTRIBUTES Attributes;
  HidD_GetAttributes(hDeviceHandle,&Attributes);
  //將有關該設備的標識顯示出來
  _tprintf("供應商ID :0X%04X ",Attributes.VendorID);
  _tprintf("產品ID :0X%04X ",Attributes.ProductID);
  _tprintf("產品版本號:0X%04X ",Attributes.VersionNumber);

  WCHAR mString[256];
  TCHAR Buffer[256];

  HidD_GetManufacturerString(hDeviceHandle,mString,sizeof(mString));
  if (wcstombs(Buffer,mString,256) == -1) // fail
  Buffer[0] = NULL;
  _tprintf("生產商: %s ",Buffer);

  HidD_GetProductString(hDeviceHandle,mString,sizeof(mString));
  if (wcstombs(Buffer,mString,256) == -1)
  Buffer[0] = NULL;
  _tprintf("產品名稱: %s ",Buffer);

  // 通信:
  PHIDP_PREPARSED_DATA pHidpPreparsedData;
  HIDP_CAPS hidPCaps;
  if (!HidD_GetPreparsedData(hDeviceHandle,&pHidpPreparsedData))
  {
  _tprintf("獲取 HID PREPARED DATA 失敗! ");
  return;
}
  NTSTATUS status = HidP_GetCaps(pHidpPreparsedData,&hidPCaps);
  if (status == HIDP_STATUS_SUCCESS)
  {
  _tprintf("CAP信息如下: ");
  _tprintf(" InputReportByteLength %d ", hidPCaps.InputReportByteLength);
  _tprintf(" OutputReportByteLength %d ", hidPCaps.OutputReportByteLength);
  }
  DWord nReadBytes = 0;
  BYTE *pInputReport = new BYTE[hidPCaps.InputReportByteLength];
  memset(pInputReport,0,hidPCaps.InputReportByteLength);

  do
  {
  ReadFile(hDeviceHandle,pInputReport,hidPCaps.InputReportByteLength,&nReadBytes,NULL);
  if (hidPCaps.InputReportByteLength == nReadBytes)
  {
  for(unsigned int i=0; i<(nReadBytes-1);i++)
  _tprintf("%02x-",pInputReport[i]);
  _tprintf("%02x ",pInputReport[nReadBytes-1]);
  }
  if (pInputReport[nReadBytes-2] == 0x20) //break the loop when pressing a specific key
  {
  _tprintf(" ");
  break;
  }
  Sleep(10);
  }while(hidPCaps.InputReportByteLength == nReadBytes);

  //釋放句柄資源
  CloseHandle(hDeviceHandle);
  }

  MemberIndex++;
  }while(bSuccess);

  SetupDiDestroyDeviceInfoList(hDevInfo);
  }