根據VID PID擷取USB裝置路徑

 

 

#include <wtypes.h>#include <setupapi.h>#pragma comment(lib, "setupapi.lib")BOOL EnumUSBDevice(WORD uVID, WORD uPID, //USB VID PID                   BOOL bPresentFlag, //裝置必須存在標誌 0不需要插入裝置                   TCHAR szDevPath[MAX_PATH+1] = NULL, //裝置路徑                   int iIndex=0) //第N個裝置 （對多個相同的裝置進行區分）{  BOOL bRet = FALSE;  int iFoundCount = 0; //尋找到匹配裝置個數  //  DWORD dwFlage = DIGCF_ALLCLASSES|DIGCF_DEVICEINTERFACE;  if(bPresentFlag)     dwFlage |= DIGCF_PRESENT;  HDEVINFO hdev = SetupDiGetClassDevs(NULL, NULL, NULL, dwFlage);  if (INVALID_HANDLE_VALUE != hdev)  {    SP_DEVINFO_DATA DeviceInfoData = {0};    DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);    DWORD DeviceIndex = 0;        while (SetupDiEnumDeviceInfo(hdev, DeviceIndex, &DeviceInfoData))     {      DeviceIndex++;      int idev = 0;       while(1)      {        SP_DEVICE_INTERFACE_DATA did = {0};        did.cbSize = sizeof(did);        if(SetupDiEnumDeviceInterfaces(hdev, NULL, &DeviceInfoData.ClassGuid, idev, &did))        {          idev++;                    DWORD cbRequired = 0;          SetupDiGetDeviceInterfaceDetail(hdev, &did, 0, 0, &cbRequired, 0);          if (ERROR_INSUFFICIENT_BUFFER == GetLastError())          {            PSP_DEVICE_INTERFACE_DETAIL_DATA pdidd =              (PSP_DEVICE_INTERFACE_DETAIL_DATA)LocalAlloc(LPTR,              cbRequired);            if (pdidd)            {              pdidd->cbSize = sizeof(*pdidd);              if (SetupDiGetDeviceInterfaceDetail(hdev, &did, pdidd, cbRequired, &cbRequired, 0))              {                OutputDebugString(pdidd->DevicePath);                OutputDebugString(_T("\r\n"));                if(uPID && uVID)                {                  LPTSTR pszVid = _tcsstr(pdidd->DevicePath, _T("vid_"));                  LPTSTR pszPid = _tcsstr(pdidd->DevicePath, _T("pid_"));                  if(pszVid && pszPid)                  {                    TCHAR szVID[5]={0}, szPID[5]={0};                    _tcsncpy_s(szVID, pszVid+4, 4);                    _tcsncpy_s(szPID, pszPid+4, 4);                    UINT pid = (UINT)_tcstol(szPID, NULL, 16);                    UINT vid = (UINT)_tcstol(szVID, NULL, 16);                    if(pid == uPID && vid == uVID)                    {                      if(iFoundCount == iIndex)                      {                        if(szDevPath)                        {                          _tcscpy_s(szDevPath, MAX_PATH, pdidd->DevicePath);                        }                        bRet = TRUE;                      }                      iFoundCount++;                    }                  }                }              }              LocalFree(pdidd);            }          }        }        else         {          if (ERROR_NO_MORE_ITEMS == GetLastError())          {            break;  // Enumeration failed - perhaps there are no more items          }        }      }    }    SetupDiDestroyDeviceInfoList(hdev);  }   return bRet;}int _tmain(int argc, _TCHAR* argv[]){  TCHAR szDevPath[MAX_PATH+1] = {0};  if(EnumUSBDevice(0x403, 0x6001, TRUE, szDevPath))  {    MessageBox(NULL, szDevPath, _T("Usb Device"), MB_OK);  }return 0;}