ClearScreen

Clear the video screen.

Declaration

Source position: videoh.inc line 132

  procedure ClearScreen;

Description

ClearScreen clears the entire screen, and calls UpdateScreen after that. This is done by writing spaces to all character cells of the video buffer in the default color (lightgray on black, color attribute \$07).

Errors

None.

See also

Name Description
InitVideo Initialize video driver.
UpdateScreen Update physical screen with internal screen image.

Example

program testvideo;
uses video,keyboard,vidutil;
Var
  i : longint;
  k : TkeyEvent;
begin
  InitVideo;
  InitKeyboard;
  For I:=1 to 10 do
    TextOut(i,i, 'Press any key to clear screen');
  UpdateScreen(false);
  K:=GetKeyEvent;
  ClearScreen;
  TextOut(1,1,'Cleared screen. Press any key to end');
  UpdateScreen(true);
  K:=GetKeyEvent;
  DoneKeyBoard;
  DoneVideo;
end.