FreeBasic

Код поможет перечислить все имеющиеся устройства в системе. Поскольку функции из библиотеки Cfgmgr32.dll не объявлены в FB, пришлось их самому декларировать. И тут почему-то функция CM_Get_DevNode_Registry_Property не декларировалась как другие, хотя вроде как я это делал по всем правилам. Пришлось вызывать ее с помощью динамического подключения библиотеки...

Платформа: Windows

#INCLUDE "windows.bi"
#INCLUDE "crt.bi"

Dim Shared CM_Get_DevNode_Registry_Property As Function (_
  dnDevInst As Integer,_
  ulProperty As UINT,_
  pulRegDataType As UINT Ptr,_
  Buffer As Any Ptr,_
  pulLength As UINT Ptr,_
  ulFlags As UINT) As Integer
  
Declare Function CM_Locate_DevNodeA Lib "Cfgmgr32.dll" Alias "CM_Locate_DevNodeA"(_
  pdnDevInst As Integer Ptr,_
  pDeviceID As Zstring Ptr,_
  ulFlags As Ulong) As Integer
  
Declare Function CM_Get_Child Lib "Cfgmgr32.dll" Alias "CM_Get_Child"(_
  pdnDevInst As Integer Ptr,_
  dnDevInst As Integer,_
  ulFlags As Ulong) As Integer  
  
Declare Function CM_Get_Parent Lib "Cfgmgr32.dll" Alias "CM_Get_Parent"(_
  pdnDevInst As Integer Ptr,_
  dnDevInst As Integer,_
  ulFlags As Ulong) As Integer  
  
Declare Function CM_Get_Sibling Lib "Cfgmgr32.dll" Alias "CM_Get_Sibling"(_
  pdnDevInst As Integer Ptr,_
  DevInst As Integer,_
  ulFlags As Ulong) As Integer   

Dim As Any Pointer hLib

hLib = Dylibload( "Cfgmgr32.dll" )
If hLib = null Then
    Print "Dylibload failed"
    Sleep
    End
Endif

CM_Get_DevNode_Registry_Property = Dylibsymbol( hLib, "CM_Get_DevNode_Registry_PropertyA" )
If CM_Get_DevNode_Registry_Property = null Then
    Print "Dylibsymbol(CM_Get_DevNode_Registry_Property) failed"
    Sleep
    Dylibfree( hLib )
    End
Endif

Dim As ZString*512 buf


    Dim As Integer     devInst
    Dim As Integer     devInstNext
    Dim As Integer   cr
    Dim As Ulong       walkDone = 0
    Dim As Ulong       len_
    
    cr = CM_Locate_DevNodeA(@devInst,_
                           NULL,_
                           0)

    If cr <> 0 Then 
        ? "Error CM_Locate_DevNodeA":Sleep:End
    Endif

    While walkDone = 0
        '
        len_ = Sizeof(buf)
        cr = CM_Get_DevNode_Registry_Property(devInst,_
                                              &hA,_
                                              NULL,_
                                              @buf,_
                                              @len_,_
                                              0)

        If cr = 0 Then
            len_ = Sizeof(buf)
            cr = CM_Get_DevNode_Registry_Property(devInst,_
                                                  &h1,_
                                                  NULL,_
                                                  @buf,_
                                                  @len_,_
                                                  0)

            If cr = 0 Then
                printf(!"%s\n", buf)
            Else
            Sleep
               End
            Endif
        Endif

        cr = CM_Get_Child(@devInstNext,_
                          devInst,_
                          0)

        If cr = 0 Then
            devInst = devInstNext
            Continue While
        Endif

        Do
            cr = CM_Get_Sibling(@devInstNext,_
                                devInst,_
                                0)

            If cr = 0 Then
                devInst = devInstNext
                Exit Do             
            Endif


            cr = CM_Get_Parent(@devInstNext,_
                               devInst,_
                               0)


            If cr = 0 Then
                devInst = devInstNext
            Else
                walkDone = 1
                Exit Do
            Endif
        Loop
Wend
Dylibfree( hLib )
Sleep