如何使用設備ID獲取USB硬件ID？

Question

如何使用設備ID獲得USB設備的硬件ID ...我使用的是vC++ 6.0，操作系統是xp。 是否有可能通過使用wmi。

Answer 1

，因爲你承擔的硬件ID你可能會有些困惑。 IoGetDeviceProperty(yourDevice, DevicePropertyHardwareID, ...)返回一個列表。

Answer 2

最後，我解決了我的問題...感謝您的回覆... 我在這裏發佈代碼，它可能對某人有用......通過此代碼，我們可以獲得所有設備的hardwareids到我們的系統..

HDEVINFO hDevInfo; 
    SP_DEVINFO_DATA DeviceInfoData; 
    DWORD i; 

    // Create a HDEVINFO with all present devices. 
    hDevInfo = SetupDiGetClassDevs(NULL, 
     0, // Enumerator 
     0, 
     DIGCF_PRESENT | DIGCF_ALLCLASSES); 

    if (hDevInfo == INVALID_HANDLE_VALUE) 
    { 
     //Error handling here. 
     printf("Error Details:[%s]\n","INVALID_HANDLE_VALUE"); 
     return 1; 
    } 

    // Enumerate through all devices in Set. 

    DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA); 
    for (i=0;SetupDiEnumDeviceInfo(hDevInfo,i, 
     &DeviceInfoData);i++) 
    { 
     DWORD DataT; 
     LPTSTR buffer = NULL; 
     LPTSTR hwbuffer=NULL; 
     DWORD buffersize = 0; 

     // 
     // Call function with null to begin with, 
     // then use the returned buffer size (doubled) 
     // to Alloc the buffer. Keep calling until 
     // success or an unknown failure. 
     // 
     // Double the returned buffersize to correct 
     // for underlying legacy CM functions that 
     // return an incorrect buffersize value on 
     // DBCS/MBCS systems. 
     // 
     while (!SetupDiGetDeviceRegistryProperty(
      hDevInfo, 
      &DeviceInfoData, 
      SPDRP_HARDWAREID, 
      &DataT, 
      (PBYTE)buffer, 
      buffersize, 
      &buffersize)) 
     { 

      if (GetLastError() == 
       ERROR_INSUFFICIENT_BUFFER) 
      { 
       // Change the buffer size. 
       if (buffer) LocalFree(buffer); 
       // Double the size to avoid problems on 
       // W2k MBCS systems per KB 888609. 
       buffer = (char*)LocalAlloc(LPTR,buffersize * 2); 
      } 
      else 
      { 
       //Error handling here. 
       //printf("Error Details:[%s]\n",GetLastError()); 
       break; 
      } 
     } 
     printf("Test Result:[%s]\n",buffer); 



     if (buffer) LocalFree(buffer); 
    } 


    if (GetLastError()!=NO_ERROR && 
     GetLastError()!=ERROR_NO_MORE_ITEMS) 
    { 
     // Error handling here. 
     printf("Error Details:[%s]\n",GetLastError()); 
     return 1; 
    } 

    // Cleanup 
    SetupDiDestroyDeviceInfoList(hDevInfo); 


    return 0;