voici ce que j'ai pu collecter sur diverses informations des caractéristiques systèmes :

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AnsiString GetWinOSType(void)
   {
   AnsiString wintype="Windows Inconnu";
 
   if (Win32Platform == VER_PLATFORM_WIN32_WINDOWS)
      {
      wintype="Windows 95";
      if (Win32MajorVersion == 4)
         {
         if (Win32MinorVersion >= 90)
            wintype="Windows 98 ME";
         else
            if (Win32MinorVersion >= 10)
               wintype="Windows 98";
         }
      }
 
   if (Win32Platform == VER_PLATFORM_WIN32_NT)
      {
      wintype="Windows NT";
      if (Win32MajorVersion == 5)
         {
         if (Win32MinorVersion >= 1)
            wintype="Windows XP";
         else
            wintype="Windows 2000";
         }
      }
 
   return(wintype);
   }
//---------------------------------------------------------------------------
int GetMemoryRam(void)
   {
   int ram;
 
   MEMORYSTATUS X;
   X.dwLength = sizeof(X);
   GlobalMemoryStatus(&X);
   ram = (X.dwTotalPhys+524288)/1024/1024;
 
   return(ram);
   }
//---------------------------------------------------------------------------
AnsiString TypeProcesseur(void)
   {
   return(StrUpper(getenv("PROCESSOR_IDENTIFIER")));
   }
//---------------------------------------------------------------------------
int NombreProcesseurs(void)
   {
   AnsiString nombre=StrUpper(getenv("NUMBER_OF_PROCESSORS"));
   return(nombre.ToIntDef(0));
   }
//---------------------------------------------------------------------------
#include "stdio.h"
//---------------------------------------------------------------------------
AnsiString NumSerieDisque(void)
   {
   AnsiString numserie;
 
   char Buffer[12],serial[15];
   DWORD VolumeSerialNumber; 
   DWORD MaximumComponentLength; 
   DWORD FileSystemFlags; 
   char FileSystemNameBuffer[5]; 
   DWORD FileSystemNameSize; 
   GetVolumeInformation("C:\\", 
                        Buffer, 
                        sizeof(Buffer), 
                        &VolumeSerialNumber, 
                        &MaximumComponentLength, 
                        &FileSystemFlags, 
                        FileSystemNameBuffer, 
                        sizeof(FileSystemNameBuffer)); 
   sprintf(serial,"%X-%X",HIWORD(VolumeSerialNumber),LOWORD(VolumeSerialNumber));
 
   numserie=serial;
 
   return(numserie);
   }
//---------------------------------------------------------------------------
AnsiString TailleDisque(void)
   {
   AnsiString ret;
 
   float Total=DiskSize(0);
   ret.sprintf("%.f",Total/1024/1024/1024);
 
   return(ret);
   }
//---------------------------------------------------------------------------
AnsiString TailleDisqueDisponible(void)
   {
   AnsiString ret;
 
   float Total=DiskFree(0);
   ret.sprintf("%.f",Total/1024/1024/1024);
 
   return(ret);
   }
//---------------------------------------------------------------------------
int NombreBitsParPixel(void)
   {
   DEVMODE DeviceMode;
   DeviceMode.dmSize=sizeof(DEVMODE);
   EnumDisplaySettings(NULL,ENUM_CURRENT_SETTINGS,&DeviceMode);
 
   return(DeviceMode.dmBitsPerPel);
   }
//---------------------------------------------------------------------------
int FrequenceRafraichissement(void)
   {
   DEVMODE DeviceMode;
   DeviceMode.dmSize=sizeof(DEVMODE);
   EnumDisplaySettings(NULL,ENUM_CURRENT_SETTINGS,&DeviceMode);
   return(DeviceMode.dmDisplayFrequency);
   }
//---------------------------------------------------------------------------
int LargeurResolution(void)
   {
   return (GetSystemMetrics(SM_CXSCREEN));
   }
//---------------------------------------------------------------------------
int HauteurResolution(void)
   {
   return (GetSystemMetrics(SM_CYSCREEN));
   }
//---------------------------------------------------------------------------
#include <Math.hpp>
//---------------------------------------------------------------------------
double NombreCouleurs(void)
   {
   double nbColors;
 
   HDC hDC = GetDC(0);
   int result = GetDeviceCaps(hDC,BITSPIXEL);
   ReleaseDC(0, hDC);
   nbColors = (double)Power(2,result);
   nbColors = nbColors/1000000;
 
   return(nbColors);
   }
//---------------------------------------------------------------------------
AnsiString CheminWindows(void)
   {
   return (StrUpper(getenv("WINDIR")));
   }
//---------------------------------------------------------------------------
AnsiString CheminSystemeWindows(void)
   {
   AnsiString repertoire;
 
   char RepertoireSystem_str[256];
   GetSystemDirectory(RepertoireSystem_str, sizeof(RepertoireSystem_str));
   repertoire=RepertoireSystem_str;
 
   return(repertoire);
   }
//---------------------------------------------------------------------------
AnsiString NomUtilisateurCourant(void)
   {
   return(StrUpper(getenv("USERNAME")));
   }
//---------------------------------------------------------------------------
AnsiString AdresseIP(void)
{
   AnsiString ret="";
 
   WORD wVersionRequested;
   WSADATA wsaData;
   char name[255];
   AnsiString ip;
   PHOSTENT hostinfo;
   wVersionRequested = MAKEWORD( 2, 0 );
 
   if (WSAStartup(wVersionRequested,&wsaData)==0)
   { 
      if(gethostname(name, sizeof(name)) == 0)
         if((hostinfo = gethostbyname(name)) != NULL)
            ret=inet_ntoa (*(in_addr *)*hostinfo->h_addr_list);
 
      WSACleanup( );
   }
   return(ret);
}
//---------------------------------------------------------------------------
AnsiString NomPC(void)
   {
   return(StrUpper(getenv("COMPUTERNAME")));
   }
//---------------------------------------------------------------------------
AnsiString NomBaseOS(void)
   {
   return(StrUpper(getenv("OS")));
   }
//---------------------------------------------------------------------------
#include <Forms.hpp>
//---------------------------------------------------------------------------
int NombrePolice(void)
   {
   return(Screen->Fonts->Count);
   }
//---------------------------------------------------------------------------
void ListeLecteur(TStrings *liste)
   {
   AnsiString lettre=" ";
 
   liste->Clear();
   for (int i=65;i<91;i++)
      {
      lettre[1]=i;
      liste->Add(lettre+" : "+TypeDisque(lettre));
      }
   }
//---------------------------------------------------------------------------
AnsiString TypeDisque(AnsiString lettre)
   {
   AnsiString typedisque="";
   int i=GetDriveType((lettre+":\\").c_str());
 
   switch(i)
      {
      case 0 : typedisque="Type inconnu";                                      break;
      case 1 : typedisque="Inexistant";                                        break;
      case 2 : typedisque="Lecteur externe";                                   break;
      case 3 : typedisque="Disque dur";                                        break;
      case 4 : typedisque="Lecteur déporté";                                   break;
      case 5 : typedisque="Lecteur CD-Rom";                                    break;
      case 6 : typedisque="Disque RAM";                                        break;
      }
 
   return(typedisque);
   }
//---------------------------------------------------------------------------
#include "Registry.hpp"
//---------------------------------------------------------------------------
void ListeLogiciel(TStrings *listeprog,AnsiString Station, AnsiString RegKey,AnsiString RegValue,int Multi)
{
   AnsiString temp;
   listeprog->Clear();
 
   if (Station!=NULL)
   {
      TRegistry* reg=new TRegistry;
      reg->RootKey=HKEY_LOCAL_MACHINE;
      if (reg->RegistryConnect(Station))
      {
         if (reg->OpenKey(RegKey, false))
         {
            if (Multi!=0)
            {
               TStringList* listeprogtemp=new TStringList();
               reg->GetKeyNames(listeprogtemp);
               for (int i=0;i<listeprogtemp->Count;i++)
               {
                  reg->CloseKey();
                  temp=RegKey+listeprogtemp->Strings[i];
                  temp+="\\";
                  reg->RootKey = HKEY_LOCAL_MACHINE;
                  reg->RegistryConnect(Station);
                  reg->OpenKey(temp, false);
                  if (reg->ValueExists(RegValue))
                     listeprog->Add(reg->ReadString(RegValue));
               }
               delete listeprogtemp;
            }
            else
            {
               if (reg->ValueExists(RegValue))
               {
                  if (reg->GetDataType(RegValue)==3)
                     listeprog->Add(reg->ReadInteger(RegValue));
                  else
                     listeprog->Add(reg->ReadString(RegValue));
               }
               else
                  listeprog->Add("N/A");
            }
            reg->CloseKey();
         }
      }
      delete reg;
   }
}
//---------------------------------------------------------------------------
double GetCPUSpeed(void)
{
   int tempsdelai=100;
 
   DWORD classepriorite=GetPriorityClass(GetCurrentProcess);
   int priorite=GetThreadPriority(GetCurrentThread);
 
   SetPriorityClass(GetCurrentProcess,REALTIME_PRIORITY_CLASS);
   SetThreadPriority(GetCurrentThread,THREAD_PRIORITY_TIME_CRITICAL);
 
   DWORD hauttimer,bastimer;
 
   Sleep(10);
 
   asm
   {
      dw 310Fh
      mov bastimer, eax
      mov hauttimer, edx
   }
 
   Sleep(tempsdelai);
 
   asm
   {
      dw 310Fh
      sub eax, bastimer
      sbb edx, hauttimer
      mov bastimer, eax
      mov hauttimer, edx
   }
 
   SetThreadPriority(GetCurrentThread,priorite);
   SetPriorityClass(GetCurrentProcess,classepriorite);
 
   return(bastimer/(1000*tempsdelai));
}
//---------------------------------------------------------------------------
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