//包含的頭文件：
#include "afxdialogex.h"
#include <windows.h>
#include <sstream>
#include <fstream>

void Cget_systemDlg::OnBnClickedButton1()
{
 //for (int i = 0; i < 10000; i++) {

 std::ostringstream osConfig;
 osConfig.precision(1);

 // Computer Name
 TCHAR infoBuf[512] = {0};
 DWORD bufCharCount = 512;
 if (GetComputerName(infoBuf, &bufCharCount)) // MSDN: If the function succeeds, the return value is a nonzero value.
  osConfig << "Computer Name: " << infoBuf << std::endl;
 else
  osConfig << "!Error: failed to get computer name" << std::endl;

 // CPU 
 CString strPath = CString("HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0"); 
 CRegKey regKey; 
 LONG lResult; 
 lResult = regKey.Open(HKEY_LOCAL_MACHINE, strPath, KEY_READ); 
 if (lResult == ERROR_SUCCESS) 
 {  
  TCHAR chCPUName[256] = {0}; 
  DWORD dwSize = 256; 
  LPCSTR name = "ProcessorNameString";
  regKey.QueryValue(chCPUName,_T("ProcessorNameString"),&dwSize);  
  osConfig << "CPU Type: " << (char*)chCPUName << std::endl;
  regKey.Close(); 
 } 
 else
  osConfig << "!Error: failed to open register for read CPU." << std::endl;

 // OS Name
 char szOsType[MAX_PATH];
 HKEY hKey;
 LPCTSTR StrKey="Software\\Microsoft\\Windows NT\\CurrentVersion";
 if (ERROR_SUCCESS == ::RegOpenKeyEx(HKEY_LOCAL_MACHINE,StrKey,NULL,KEY_READ,&hKey))
 {
  DWORD dwSize = 255;
  DWORD dwType = REG_SZ;
  LPCSTR KeyValue = "ProductName";
  if (ERROR_SUCCESS == ::RegQueryValueEx(hKey,KeyValue,0,&dwType,(BYTE *)szOsType,&dwSize))
   osConfig << "OS : " << szOsType;
  else
   osConfig << "!Error: failed to get OS name." << std::endl;
  ::RegCloseKey(hKey);
 }
 else 
  osConfig << "!Error: failed to get OS name." << std::endl;

 SYSTEM_INFO si;
 GetNativeSystemInfo(&si); // MSDN: This function does not return a value.
 if (si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64 || si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_IA64 )
  osConfig << " 64bits";
 else
  osConfig << " 32bits";

 OSVERSIONINFO osVer;
 osVer.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
 if (::GetVersionEx (&osVer)) // MSDN: If the function succeeds, the return value is a nonzero value.
  osConfig << " " << osVer.szCSDVersion << " " << std::endl;
 else
  osConfig << "!Error: failed to get OS CSD version.";

 // Memory
 MEMORYSTATUSEX statusex;
 statusex.dwLength = sizeof (statusex);
 if (GlobalMemoryStatusEx(&statusex)) // MSDN: If the function succeeds, the return value is nonzero.
 {
  osConfig << "Installed RAM: "<< std::fixed << statusex.ullTotalPhys /1024/1024/1024.0 << "GB";
  osConfig << " Free RAM: " << std::fixed << statusex.ullAvailPhys/1024/1024/1024.0 << "GB" << std::endl;
 }
 else
  osConfig << "!Error: failed to get RAM information." << std::endl;

 // Hard Drive
 // GetLogicalDriveStrings(sizeof(cDriveArray), cDriveArray);
 // MSDN: If the function fails, the return value is zero. 
 // If the function succeeds, the return value is the length, in characters, of the strings copied to the buffer, 
 // not including the terminating null character
 ULARGE_INTEGER free;
 ULARGE_INTEGER total;
 ULARGE_INTEGER totalfree;
 TCHAR szDriveArray[128] = {0};
 TCHAR *p, *pStart;
 pStart = szDriveArray;
 p = szDriveArray;
 int nLen = GetLogicalDriveStrings(sizeof(szDriveArray), szDriveArray);
 if (nLen !=0 ) 
 {
  while ((p = _tcschr(p, _T('\0'))) && p != szDriveArray + nLen )
  {
   if (GetDiskFreeSpaceEx(pStart, &free, &total, &totalfree)) // if success, nonzero
   {
    osConfig << "[" << pStart << "]" << " Total: " << std::fixed << total.QuadPart/1024/1024/1024.0 
     << "GB Available: " << std::fixed << free.QuadPart/1024/1024/1024.0 << "GB";
    if (GetDriveType(pStart) == 3)
     osConfig <<" - Fixed Drive" << std::endl;
    else if (GetDriveType(pStart) == 4)
     osConfig <<" - (Remote Drive)" << std::endl;
    else
     osConfig <<" - Other" << std::endl;
   }
   pStart = ++p; 
  }
 }
 else
  osConfig << "!Error: failed to get logical drive name." << std::endl;

 AfxMessageBox(osConfig.str().c_str());

 //std::ostringstream file;
 //file << i << ".txt";
 //std::ofstream log(file.str().c_str());

 //log << osConfig.str().c_str();
 //log.close();
 //log.clear();

 //}
 AfxMessageBox("DONE");
}

Computer Name: ATE
CPU Type: Intel(R) Core(TM)2 Duo CPU  E7500 @ 2.93GHz
OS : Windows 7 Ultimate 64bits Service Pack 1 
Installed RAM: 3.9GB Free RAM: 1.2GB
[C:\] Total: 48.8GB Available: 13.4GB - Fixed Drive
[D:\] Total: 100.0GB Available: 52.5GB - Fixed Drive
[E:\] Total: 149.3GB Available: 7.2GB - Fixed Drive
[K:\] Total: 4607.9GB Available: 230.9GB - (Remote Drive)
[M:\] Total: 2000.0GB Available: 1703.8GB - (Remote Drive)
[N:\] Total: 4607.9GB Available: 230.9GB - (Remote Drive)
[P:\] Total: 4607.9GB Available: 230.9GB - (Remote Drive)
[T:\] Total: 4607.9GB Available: 230.9GB - (Remote Drive)
[X:\] Total: 142.8GB Available: 20.9GB - (Remote Drive)