擷取指定USB裝置的VID PID和SerialNumber

所需頭檔案庫檔案: #include <Setupapi.h> , Setupapi.lib

void CCameraInfoViewerDlg::CollectUSBInfo()
{
    // 擷取目前系統所有使用的裝置
    DWORD dwFlag = (DIGCF_ALLCLASSES | DIGCF_PRESENT);
   HDEVINFO hDevInfo = SetupDiGetClassDevs(NULL, NULL, NULL, dwFlag);
   if( INVALID_HANDLE_VALUE == hDevInfo )
   {
       AfxMessageBox( _T("擷取系統裝置清單失敗") );
       return;
   }

    // 準備周遊所有裝置查找USB
    SP_DEVINFO_DATA sDevInfoData;
    sDevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);


   //VID: ZYZW  公司的生産商号
    const TCHAR NIKON_ID[] = _T("XYZW");
   CString strText;
   TCHAR szDIS[MAX_PATH]; // Device Identification Strings, 
   DWORD nSize = 0 ;
   for(int i = 0; SetupDiEnumDeviceInfo(hDevInfo,i,&sDevInfoData); i++ )
   {
       nSize = 0;
       if ( !SetupDiGetDeviceInstanceId(hDevInfo, &sDevInfoData, szDIS, sizeof(szDIS), &nSize) )
       {
            AfxMessageBox( _T("擷取裝置識别字元串失敗") );
            break;
       }

    // 裝置識别串的前三個字元是否是"USB", 模闆： USB\VID_XXXX&PID_XXXX\00000xxxxxxx
    CString strDIS( szDIS );
    strDIS.MakeUpper();
    if( strDIS.Left( 3 ) == _T("USB") )
    {
       strText += strDIS;
       strText += _T("\r\n");
       int iVID_Pos = strDIS.Find( NIKON_ID );
       if( iVID_Pos == 8 )
       {
          // VID: 廠商号
             m_wndEditVID.SetWindowText( NIKON_ID  );
          // PID :産品号
            int iSlashPos = strDIS.ReverseFind(_T('\\'));
          int iPID_Pos = strDIS.Find( _T("PID_") );
          CString strProductID = strDIS.Mid( iPID_Pos+4, iSlashPos - iPID_Pos - 4 );
          m_wndEditPID.SetWindowText( strProductID  );
          // 序列号
           int iRight = strDIS.GetLength() - iSlashPos  -1;
         CString strSerialNumber = strDIS.Right( iRight );
         m_wndEditNUM.SetWindowText( strSerialNumber );
       }
    }
  }

  m_wndEditENUM.SetWindowText( strText );

   // 釋放裝置
   SetupDiDestroyDeviceInfoList(hDevInfo);
}