如何能自动捕获插入的usb设备，并且得到usb设备的名称。

Question

如何能自动捕获插入的usb设备，并且得到usb设备的名称。

Answer 1

"usbview in ddk"jslisong(碧螺春) 不是已经说了吗

Answer 2

下面是我目前项目中使用的一个函数
LPSTR FindDevices(void) {
PSP_DEVICE_INTERFACE_DETAIL_DATA   DevDetailData[DEV_NUM];  GUID                             HidGuid;
  HDEVINFO                         DevInfo;
SP_DEVICE_INTERFACE_DATA         DevData;
  PSP_DEVICE_INTERFACE_DETAIL_DATA DevDetail;
PHIDP_PREPARSED_DATA            PreparsedData;
HIDP_CAPS                      Capabilities;
  ULONG                            Length;
  int                              Index;
  BOOL                             ok;
  HANDLE DevHandle;
  int DevCount = 0;
  char chRet[256];
  LPSTR strRet=NULL;  memset(chRet, 0, 256);  /* Get GUID for all System HIDs */
  HidD_GetHidGuid(&HidGuid);  /* Get Device Information for all present devices */
  DevInfo = SetupDiGetClassDevs(&HidGuid, 
                                NULL, 
                                NULL, 
                                (DIGCF_PRESENT | DIGCF_DEVICEINTERFACE)
                                );  DevData.cbSize = sizeof(DevData);  DevDetail = NULL;  Index = -1;  /* Scan all Devices */
  do {    Index++;    /* Device Interface Element of a Device Information set */
ok = SetupDiEnumDeviceInterfaces(DevInfo, 
                                     0, 
                                     &HidGuid, 
                                     Index, 
                                     &DevData
                                     );
    if (!ok) break;    /* Get Device Interface Details - Get Length */
  ok = SetupDiGetDeviceInterfaceDetail(DevInfo, 
                                         &DevData, 
                                         NULL, 
                                         0, 
                                         &Length, 
                                         NULL
                                         ); /* Allocate memory for Device Detailed Data */
DevDetail = (PSP_DEVICE_INTERFACE_DETAIL_DATA) malloc(Length);

/* Set cbSize in the DevDetail structure */
DevDetail->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); /* Get Device Interface Details */
ok = SetupDiGetDeviceInterfaceDetail(DevInfo, 
                                   &DevData, 
                                   DevDetail, 
                                   Length, 
                                   NULL, 
                                   NULL
                                         );
    if (!ok) continue;    /* Create File for Device Read/Write */
DevHandle = CreateFile(DevDetail->DevicePath, 
                     GENERIC_READ | GENERIC_WRITE, 
                     FILE_SHARE_READ | FILE_SHARE_WRITE, 
                     (LPSECURITY_ATTRIBUTES)NULL,
                     OPEN_EXISTING, 
                     0, 
                     NULL
                           );    if (DevHandle == INVALID_HANDLE_VALUE) continue;    /* Get Preparsed Data */
strRet = DevDetail->DevicePath;
  ok = HidD_GetPreparsedData(DevHandle, &PreparsedData);
    if (!ok) continue;    /* Get Device's Capabilities */
  HidP_GetCaps(PreparsedData, &Capabilities);    /* Remember Device Interface Detail Data for acceptable Devices */
    if ((Capabilities.UsagePage == 0xFF00) && (Capabilities.Usage == 0x0001)) {
      DevDetailData[DevCount++] = DevDetail;
      DevDetail = NULL;
    }    CloseHandle (DevHandle);  } while (DevCount < DEV_NUM);  if (DevDetail)
  {
  strRet = DevDetail->DevicePath;
memcpy(chRet, DevDetail->DevicePath, sizeof(DevDetail->DevicePath));
free(DevDetail);
  }  SetupDiDestroyDeviceInfoList (DevInfo);  return (char*)(strRet);
}