windows枚举串口

1. 枚举键值

HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM

2. SETUPAPI方式

 int EnumPortsWdm()
 {
     int i, dwDetDataSize;
     TCHAR fname[], locinfo[];
     HDEVINFO hDevInfo;
     SP_DEVICE_INTERFACE_DETAIL_DATA* pDetData;
     SP_DEVICE_INTERFACE_DATA ifcData;
     SP_DEVINFO_DATA devdata;

     static const GUID ___GUID_CLASS_COMPORT = \
     { 0x86E0D1E0L, 0x8089, 0x11D0, { 0x9C, 0xE4, 0x08, 0x00, 0x3E, 0x30, 0x1F, 0x73 } };
     /*static const GUID ___GUID_CLASS_COMPORT = \
     { 0xAD498944, 0x762F, 0x11D0, { 0x8D, 0xCB, 0x00, 0xC0, 0x4F, 0xC3, 0x35, 0x8C } };*/

     hDevInfo = SetupDiGetClassDevs( &___GUID_CLASS_COMPORT, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE );
     if ( hDevInfo == INVALID_HANDLE_VALUE )
     {
         return -;
     }

     dwDetDataSize = sizeof( SP_DEVICE_INTERFACE_DETAIL_DATA ) + ;
     pDetData = ( SP_DEVICE_INTERFACE_DETAIL_DATA* )calloc( , dwDetDataSize );
     if ( !pDetData )
     {
         SetupDiDestroyDeviceInfoList( hDevInfo );
         return -;
     }

     ifcData.cbSize = sizeof( SP_DEVICE_INTERFACE_DATA );
     pDetData->cbSize = sizeof( SP_DEVICE_INTERFACE_DETAIL_DATA );

     for ( i = ; SetupDiEnumDeviceInterfaces( hDevInfo, NULL, &___GUID_CLASS_COMPORT, i, &ifcData ); i ++ )
     {
         memset( &devdata, , sizeof( SP_DEVINFO_DATA ) );
         devdata.cbSize = sizeof( SP_DEVINFO_DATA );

         if ( !SetupDiGetDeviceInterfaceDetail( hDevInfo, &ifcData, pDetData, dwDetDataSize, NULL, &devdata ) )
         {
             break;
         }

         MessageBox( NULL, pDetData->DevicePath, TEXT( "PATH" ), MB_OK );
         if ( SetupDiGetDeviceRegistryProperty( hDevInfo, &devdata, SPDRP_FRIENDLYNAME, NULL, ( PBYTE )fname, sizeof( fname ), NULL ) )
         {
             MessageBox( NULL, fname, TEXT( "NAME" ), MB_OK );
         }

         if ( SetupDiGetDeviceRegistryProperty( hDevInfo, &devdata, SPDRP_LOCATION_INFORMATION, NULL, ( PBYTE )locinfo, sizeof( locinfo ), NULL ) )
         {
             if ( StrCmpN( locinfo, TEXT( "USB" ),  ) ==  )
             {
                 MessageBox( NULL, TEXT( "USB" ), TEXT( "TYPE" ), MB_OK );
             }
         }
     }

     free( pDetData );
     SetupDiDestroyDeviceInfoList( hDevInfo );
     return ;
 }