How to determine physical machine

Using system manufacture name

CMD : SYSTEMINFO

WMI 

http://msdn.microsoft.com/en-us/library/windows/desktop/aa389762%28v=vs.85%29.aspx

http://msdn.microsoft.com/en-us/library/windows/desktop/aa390418%28v=vs.85%29.aspx

Registry

http://www.rohitab.com/discuss/topic/35915-win32-api-to-get-system-information/

#include <windows.h>

#include <commctrl.h>

#include <shlwapi.h>

 

 

UINT GetComputerManufacturer(LPSTR lpBuffer, UINT uSize)

{

    HKEY   hkData;

    HANDLE hHeap;

    LPSTR  lpString = NULL;

    LPBYTE lpData   = NULL;

    DWORD  dwType = 0, dwSize = 0;

    UINT   uIndex, uStart, uEnd, uString, uLength, uState = 0;

    LONG   lErr;

     

    if((lErr = RegOpenKeyEx(HKEY_LOCAL_MACHINE, TEXT("SYSTEM\\CurrentControlSet\\Services\\mssmbios\\Data"),

        0, KEY_QUERY_VALUE, &hkData)) != ERROR_SUCCESS){

        SetLastError(lErr);

        return 0;

    }

    if((lErr = RegQueryValueEx(hkData, TEXT("SMBiosData"), NULL, &dwType, NULL, &dwSize)) == ERROR_SUCCESS){

        if(dwSize == 0 || dwType != REG_BINARY) lErr = ERROR_BADKEY;

        else{

            hHeap = GetProcessHeap();

            lpData = (LPBYTE)HeapAlloc(hHeap, 0, dwSize);

            if(!lpData) lErr = ERROR_NOT_ENOUGH_MEMORY;

            else lErr = RegQueryValueEx(hkData, TEXT("SMBiosData"),

                NULL, NULL, lpData, &dwSize);

        }

    }

    RegCloseKey(hkData);

     

    if(lErr == ERROR_SUCCESS){

        uIndex  = 8 + *(WORD *)(lpData + 6);

        uEnd    = 8 + *(WORD *)(lpData + 4);

        while(lpData[uIndex] != 0x7F && uIndex < uEnd){

            uIndex += lpData[(uStart = uIndex) + 1];

            uString = 1;

            do{

                if(lpData[uStart] == 0x01 && uState == 0){

                    if( lpData[uStart + 4] == uString ||

                        lpData[uStart + 5] == uString ||

                        lpData[uStart + 6] == uString){

                        lpString = (LPSTR)(lpData + uIndex);

                        if(!StrCmpI(lpString, "System manufacturer")){

                            lpString = NULL;

                            uState++;

                        }

                    }

                     

                }else if(lpData[uStart] == 0x02 && uState == 1){

                    if( lpData[uStart + 4] == uString ||

                        lpData[uStart + 5] == uString ||

                        lpData[uStart + 6] == uString)

                        lpString = (LPSTR)(lpData + uIndex);

                     

                }else if(lpData[uStart] == 0x03 && uString == 1){

                    switch(lpData[uStart + 5])

                    {

                        default:   lpString = "(Other)";               break;

                        case 0x02: lpString = "(Unknown)";             break;

                        case 0x03: lpString = "(Desktop)";             break;

                        case 0x04: lpString = "(Low Profile Desktop)"; break;

                        case 0x06: lpString = "(Mini Tower)";          break;

                        case 0x07: lpString = "(Tower)";               break;

                        case 0x08: lpString = "(Portable)";            break;

                        case 0x09: lpString = "(Laptop)";              break;

                        case 0x0A: lpString = "(Notebook)";            break;

                        case 0x0E: lpString = "(Sub Notebook)";        break;

                    }

                     

                }

                if(lpString != NULL){

                    uLength = strlen(lpString) + 1;

                    if(uSize > uLength + 1)

                        lpBuffer += wsprintf(lpBuffer, "%s ", lpString);

                    uSize -= uLength;

                    lpString = NULL;

                }

                uString++;

                while(lpData[uIndex++]);

            }while(lpData[uIndex] && uIndex < uEnd);

            uIndex++;

        }

    }

     

    if(lpData)

        HeapFree(hHeap, 0, lpData);

    SetLastError(lErr);

 

    return uSize;

}

 

int APIENTRY WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR lpCmdLine, int nShowCmd)

{

    TCHAR szBuffer[128];

    szBuffer[0] = 0;

     

    InitCommonControls();

     

    if(GetComputerManufacturer(szBuffer, 128) < 0)

        wsprintf(szBuffer, "Failed: %d", GetLastError());

 

    MessageBox(HWND_DESKTOP, szBuffer, TEXT("Manufacturer"), MB_OK);

     

    return 0;

}