Clear Screen Code

Can someone please explain this function? I found it in one of the threads on this forum, but I can't decipher it.

Code:

---

void clrscr()
{
  COORD coordScreen = { 0, 0 };
  DWORD cCharsWritten;
  CONSOLE_SCREEN_BUFFER_INFO csbi;
  DWORD dwConSize;
  HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
  GetConsoleScreenBufferInfo(hConsole, &csbi);
  dwConSize = csbi.dwSize.X * csbi.dwSize.Y;
  FillConsoleOutputCharacter(hConsole, TEXT(' '), dwConSize, coordScreen, &cCharsWritten);
  GetConsoleScreenBufferInfo(hConsole, &csbi);
  FillConsoleOutputAttribute(hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten);
  SetConsoleCursorPosition(hConsole, coordScreen);
}

---

Thanks in advance.

I do understand what it does, but not how it does it.

You can look up each function here. Like GetConsoleScreenBufferInfo().

Also, Windows specific questions should go on this message board.

gg

What don't you understand?

The screen of a console is simply a buffer of characters. What that code does is gets the buffer, replaces the buffers existing contents with spaces then homes the cursor.