FILLCHAR.C

/******************************************************************************\ 
*       This is a part of the Microsoft Source Code Samples.  
*       Copyright 1993 - 1998 Microsoft Corporation. 
*       All rights reserved.  
*       This source code is only intended as a supplement to  
*       Microsoft Development Tools and/or WinHelp documentation. 
*       See these sources for detailed information regarding the  
*       Microsoft samples programs. 
\******************************************************************************/ 
 
#include <windows.h> 
#include "console.h" 
 
/******************************************************************* 
* FUNCTION: demoFillChar(HANDLE hConOut)                           * 
*                                                                  * 
* PURPOSE: demonstrate FillConsoleOutputCharacter. Fill the entire * 
*          console with the character that the user hits           * 
*                                                                  * 
* INPUT: the output console to fill with characters                * 
********************************************************************/ 
 
void demoFillChar(HANDLE hConOut) 
{ 
  HANDLE hStdIn; 
  INPUT_RECORD inputBuf; 
  CHAR c; /* ascii character read from the console */ 
  CONSOLE_SCREEN_BUFFER_INFO csbi; 
  COORD coordScreen = {0, 1}; /* location to start the attribute fill */ 
  DWORD cCharsWritten; 
  BOOL bSuccess;  
  DWORD cInputEvents; 
 
  setConTitle(__FILE__); 
  myPuts(hConOut, "Let's fill the console buffer with a given character by\n" 
                  "using the FillConsoleOutputCharacter API. Hit a key to \n" 
                  "fill the buffer with (hit ESC to return):"); 
  hStdIn = GetStdHandle(STD_INPUT_HANDLE); 
  PERR(hStdIn != INVALID_HANDLE_VALUE, "GetStdHandle"); 
  for(;;) 
    { 
    do 
      { 
      /* get input events until you get a key-down event */ 
      bSuccess = ReadConsoleInput(hStdIn, &inputBuf, 1, &cInputEvents); 
      PERR(bSuccess, "ReadConsoleInput"); 
      } while (inputBuf.EventType != KEY_EVENT || 
            !inputBuf.Event.KeyEvent.bKeyDown); 
    c = (char) inputBuf.Event.KeyEvent.uChar.AsciiChar; 
    if (inputBuf.Event.KeyEvent.wVirtualKeyCode == VK_ESCAPE) 
      break; 
    /* we need to get the console buffer size */ 
    bSuccess = GetConsoleScreenBufferInfo(hConOut, &csbi); 
    PERR(bSuccess, "GetConsoleScreenBufferInfo"); 
    bSuccess = FillConsoleOutputCharacter(hConOut, /* screen buffer handle */ 
        c, /* character to write */ 
        (csbi.dwSize.X * csbi.dwSize.Y) - csbi.dwSize.X, /* number of chars */ 
        coordScreen, /* x and y coordinates of first cell */ 
        &cCharsWritten); /* receives number of cells written to */ 
    PERR(bSuccess, "FillConsoleOutputCharacter"); 
  } 
  return; 
}