Win32 Windows Volume Program and Code Example 7

 

 

 

 

 

Another Basic Windows System Information Program Example

 

Create a new Win32 console application project and give a suitable project name.

 

Another Basic Windows System Information Program Example - creating new Win32 console mode application project

 

Add the source file and give a suitable name.

 

Another Basic Windows System Information Program Example - adding a new C++ source file

 

Add the following source code.

 

// Extracting some computer information program example

#include<windows.h>

#include<stdio.h>

 

#define TOTALBYTES    2048

 

void PrintSystemName()

{

      WCHAR compName[40];

      DWORD size = 40;

 

      if(GetComputerName(compName,&size)!=0)

            wprintf(L"Computer Name : %s ",compName);

}

 

void PrintUserName()

{

      WCHAR uName[40];

      DWORD size = 40;

 

      if(GetUserName(uName,&size) != 0)

            wprintf(L"\nLogged user name : %s",uName);

}

 

void PrintSystemUpTime()

{

      unsigned int t,d,h,m,s;

 

      // Retrieves the number of milliseconds that have elapsed since

      // the system was started, up to 49.7 days.

      t = GetTickCount();

 

      // Get the seconds

      t/=1000;

      //days

      d = t/86400;

      t = t%86400;

      // hours

      h = t/3600;

      t = t%3600;

      // minutes

      m = t/60;

      t = t%60;

      // seconds

      s = t;

 

      wprintf(L"\nSystem Up Time(D:H:M:S) = %u:%u:%u:%u",d,h,m,s);     

}

void PrintDrivesInfo()

{

      int drives,i=0;

      __int64 nFree, nTotal, nHDFree=0, nHDTotal=0;

      WCHAR dName[40],volName[40];

 

      wprintf(L"\n\nHard Disk Info:");

      wprintf(L"\n---------------");

 

      // Returns the drive bitmasks

      drives = GetLogicalDrives();

 

      // Iterate all the available drives

      while(drives != 0)

      {

            // Do the logical AND

            if((drives&1) == 1)

            {

                  // Iterate starting from drive A

                  wsprintf(dName,L"%c:\\",'A'+i);

                 

                  // Retrieves information about the amount of space that is available on a

                  // disk volume, which is the total amount of space, the total amount of

                  // free space, and the total amount of free space available to the user

                  // that is associated with the calling thread.

                  if(GetDiskFreeSpaceEx(dName,(PULARGE_INTEGER)&nFree,(PULARGE_INTEGER)&nTotal,NULL)!= 0)

                  {

                        wprintf(L"\n%s",dName);

                        nHDFree += nFree;

                        nHDTotal += nTotal;

                        wprintf(L" Free : %6.2I64fGB Total : %6.2I64fGB  ", nFree/(1024*1024*1024.0),nTotal/(1024*1024*1024.0));

 

                        // Retrieves information about the file system and volume

                        // associated with the specified root directory.

                        if(GetVolumeInformation(

                              dName,

                              NULL,

                              0,

                              NULL,

                              NULL,

                              NULL,

                              volName,

                              sizeof(volName)) !=0)

 

                              wprintf(L"%s",volName);

                  }

            }

            drives>>=1;

            i++;

      }

 

      // Total storage and free, uncomment to see it

      // wprintf(L"\n===========================================");

      // wprintf(L"\n    Free : %6.2I64fGB Total : %6.2I64fGB",nHDFree/(1024*1024*1024.0),nHDTotal/(1024*1024*1024.0));

      // wprintf(L"\n===========================================");

}

 

void PrintMonitorResolution()

{

      int width,height;

 

      // GetSystemMetrics() function retrieves the dimensions — widths and heights — of

      // Windows display elements and system configuration settings in pixels

      width = GetSystemMetrics(SM_CXSCREEN);

      height = GetSystemMetrics(SM_CYSCREEN);

      wprintf(L"\n\nMonitor Resolution : %dx%d",width,height);

}

 

void PrintOSInfo()

{

      WCHAR windirName[MAX_PATH];

      OSVERSIONINFO verInfo = {sizeof(OSVERSIONINFO)};

      wprintf(L"\n\nOS Info: ");

      wprintf(L"\n--------");

      wprintf(L"\nVersion : ");

 

      // Retrieves information about the current operating system.

      GetVersionEx(&verInfo);

      if(verInfo.dwMajorVersion == 4 && verInfo.dwMinorVersion == 10)

            wprintf(L" Windows 98 %s",verInfo.szCSDVersion);

      if(verInfo.dwMajorVersion == 5 && verInfo.dwMinorVersion == 0)

            wprintf(L" Windows 2000 %s",verInfo.szCSDVersion);

      if(verInfo.dwMajorVersion == 5 && verInfo.dwMinorVersion == 1)

            wprintf(L" Windows XP %s",verInfo.szCSDVersion);

      if(verInfo.dwMajorVersion == 5 && verInfo.dwMinorVersion == 2)

            wprintf(L" Windows 2003 %s",verInfo.szCSDVersion);

 

      // Get Windows directory

      GetWindowsDirectory(windirName,55);

      wprintf(L"\nWindows Directory : %s ",windirName);

 

      // Get Windows system directory

      GetSystemDirectory(windirName,55);

      wprintf(L"\nSystem Directory  : %s ",windirName);

 

      // Get the Windows temporary directory

      GetTempPath(MAX_PATH,windirName);

      wprintf(L"\nTemp Directory    : %s \n",windirName);

}

 

void PrintProcessorInfo()

{

      // Pointer to HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor

      HKEY hKey,tempKey;

      WCHAR subKeyName[40];

      DWORD BufferSize = TOTALBYTES;

      LPBYTE valBuf = (LPBYTE)malloc(BufferSize);

      int i=0,t;

      DWORD size=100;

 

      wprintf(L"\n\nProcessor Info:");

      wprintf(L"\n---------------");

 

      // Embedding the assembly in C/C++ code

      __asm

      {

            // 01h for getting number of core present in the physical processor

            mov eax,01h

            cpuid

            mov t,ebx

      }

      wprintf(L"\nNumber of logical processors(cores) : %d",(t>>16)&0xff); 

 

      // Read the processor from registry

      // Open the registry key

      if(RegOpenKeyEx(HKEY_LOCAL_MACHINE,

            L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor",

            0,

            KEY_READ,

            &hKey)== ERROR_SUCCESS)

      {

            // Enumerate the keys

            while(RegEnumKey(hKey,i++,subKeyName,40) != ERROR_NO_MORE_ITEMS)

            {

                  if(RegOpenKeyEx(hKey,subKeyName,0,KEY_READ,&tempKey) == ERROR_SUCCESS)

                  {

                        size = 100;

 

                        // Retrieves the type and data for the ProcessorNameString.

                        if(RegQueryValueEx(tempKey,

                              L"ProcessorNameString",

                              NULL,

                              NULL,

                              valBuf,

                              &size) == ERROR_SUCCESS)

 

                              wprintf(L"\nProcessor  %s :\n %s",subKeyName,valBuf);

 

                        size = 100;

 

                        // Retrieves the type and data for the Identifier.

                        if(RegQueryValueEx(

                              tempKey,

                              L"Identifier",

                              NULL,

                              NULL,

                              valBuf,

                              &size) == ERROR_SUCCESS)

 

                              wprintf(L" %s",valBuf);

                        RegCloseKey(tempKey);

                  }

            }

            RegCloseKey(hKey);

      }

      free(valBuf);

}

 

void PrintMemoryInfo()

{

      MEMORYSTATUSEX ms={sizeof(MEMORYSTATUSEX)};

 

      // Retrieves information about the system's current

      // usage of both physical and virtual memory.

      GlobalMemoryStatusEx(&ms);

 

      wprintf(L"\n\nMemory Info:");

      wprintf(L"\n------------");

      wprintf(L"\nTotal Physical Memory     : %8.2I64fMB \nAvailable Physical Memory : %8.2I64fMB \nUsed Physical Memory      : %8.2I64fMB \n\n",ms.ullTotalPhys/(1024*1024.0),ms.ullAvailPhys/(1024*1024.0),ms.ullTotalPhys/(1024*1024.0)-ms.ullAvailPhys/(1024*1024.0));

}

 

int wmain(int argc, WCHAR **argv)

{

      wprintf(L"SYSTEM INFORMATION SAMPLE\n-------------------\n");

      PrintSystemName();

      PrintUserName();

      PrintSystemUpTime();

      PrintDrivesInfo();

      PrintMonitorResolution();

      PrintOSInfo();

      PrintProcessorInfo();

      PrintMemoryInfo();

 

      wprintf(L"\nCurrently Running Processes:\n----------------------------");

      // Just ask tasklist command

      system("tasklist");    

}

 

Build and run the project. The following screenshot is an output sample.

 

Another Basic Windows System Information Program Example - a sample console system information output

 

 

 

  < Windows Volume 6 | Win32 Programming Index | Windows Volume Index | Windows Volume 8 >