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C-/C++-Quelltext

#include <windows.h>
#include <sstream>
#include <string>

using namespace std;

#ifdef UNICODE
    #define cout wcout
#else
    #define cout cout
#endif

#define ARRAY_SIZE( x ) \
    ( sizeof( x ) / sizeof( 0[( x )] ) )

int main()
{   
    DWORD nSize; 

    TCHAR computer_name[255]; 
    nSize = ARRAY_SIZE( computer_name );
    GetComputerName( computer_name, &nSize ); 
    cout << TEXT( "Computer name: " ) << computer_name << endl; 

    TCHAR user_name[255]; 
    nSize = ARRAY_SIZE( user_name );
    GetUserName( user_name, &nSize ); 
    cout << TEXT( "User name: " ) << user_name << endl; 

    TCHAR windir_name[MAX_PATH]; 
    GetWindowsDirectory( windir_name, ARRAY_SIZE( windir_name ) ); 
    cout << TEXT( "Windows-Directory: " ) << windir_name << endl; 

    cout << endl;
    cin.get();
}