{
 I would like to detect more than 2 keys being pressed within a form.
 For example I would like to know if the user pressed time. The onkeydown seems to only check for one or two keys max but surely
 you can determine what keys are currently down.
}
// You can use GetKeyState:
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
 Shift: TShiftState);
begin
 If ((GetKeyState(VK_CONTROL) AND 128)=128) and
  ((GetKeyState(VK_F5) AND 128)=128) and
  ((GetKeyState(ord('8')) AND 128)=128)
  then
  ShowMessage('CTRL+F5+8 Pressed');
end;
( Remember: Form1.Keypreview := TRUE )

// Or you can read the entire KeyBoard Status,
// and later check for the three keys:
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
 Shift: TShiftState);
var
  KeybState: TKeyboardState;
begin
 GetKeyboardState(Teclado);
 If ( (KeybState[VK_CONTROL] and 128)=128 ) and
  ( (KeybState[VK_F5] and 128)=128 ) and
  ( (KeybState[Ord('8')] and 128)=128 )
  then
  ShowMessage('CTRL+F5+8 Pressed');
end;