clear.cpp

#include <iostream>
#include <windows.h>
#include <cstdio>

/* Standard error macro for reporting API errors */ 
#define PERR(bSuccess, api){if(!(bSuccess)) printf("%s:Error %d from %s \ 
   on line %d\n", __FILE__, GetLastError(), api, __LINE__);}

void clear( HANDLE hConsole )
{
   COORD coordScreen = { 0, 0 };    /* here's where we'll home the
                                       cursor */ 
   BOOL bSuccess;
   DWORD cCharsWritten;
   CONSOLE_SCREEN_BUFFER_INFO csbi; /* to get buffer info */ 
   DWORD dwConSize;                 /* number of character cells in
                                       the current buffer */ 

   /* get the number of character cells in the current buffer */ 

   bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi );
   PERR( bSuccess, "GetConsoleScreenBufferInfo" );
   dwConSize = csbi.dwSize.X * csbi.dwSize.Y;

   /* fill the entire screen with blanks */ 

   bSuccess = FillConsoleOutputCharacter( hConsole, (TCHAR) ' ',
      dwConSize, coordScreen, &cCharsWritten );
   PERR( bSuccess, "FillConsoleOutputCharacter" );

   /* get the current text attribute */ 

   bSuccess = GetConsoleScreenBufferInfo( hConsole, &csbi );
   PERR( bSuccess, "ConsoleScreenBufferInfo" );

   /* now set the buffer's attributes accordingly */ 

   bSuccess = FillConsoleOutputAttribute( hConsole, csbi.wAttributes,
      dwConSize, coordScreen, &cCharsWritten );
   PERR( bSuccess, "FillConsoleOutputAttribute" );

   /* put the cursor at (0, 0) */ 

   bSuccess = SetConsoleCursorPosition( hConsole, coordScreen );
   PERR( bSuccess, "SetConsoleCursorPosition" );
   return;
}

int main()
{
	clear(GetStdHandle(STD_OUTPUT_HANDLE));
	return 0;
}