How to make a sticky refreshable message(box)?

[Atari800XL]

Hello together,

I tried to make a sticky messagebox with changing (text-)content, native LUA and MOOSE but everything failed.
Has anyone a hint for me? The goal is to only have one grey message-box in the upper-right corner, no additional messages.
The MESSAGE:New("fooBazBar",15,"",true) with clearScreen-flag on makes this flickering and this is ugly, in my task every 0.33 seccond a string should be refreshed in such a message-box. This box contains some debugging-variables.

How to realize this without flickering?

Thanks and best regards!

 

EDIT: here's my prototype of how I try to solve thisI

IR_TIMER = 0
DISPLAY = ""

function interrupt()
  IR_TIMER = IR_TIMER + 1
  if IR_TIMER % 5 == 0 then
    DISPLAY = IR_TIMER .. ". call..."
  end
  refreshStatus(DISPLAY)
  timer.scheduleFunction(interrupt, nil, ( timer.getTime()+0.3) )
end

function refreshStatus(txt)
  if DISPLAY ~= txt then -- only when DISPLAY changed:
    -- at this point I need some magic please:
    magicRefresh(DISPLAY)
    DISPLAY = txt
  end
end

-- Missionlogics a.s.o.


interrupt()

 

Edited October 24, 2023 by Atari800XL

[Grimes]

The clearview option is the only way. Try experimenting with timing of the message, it used to be pretty even, but if the flickering is that bad then it might warrant a bug report. 

[Atari800XL]

Yes, I think the best solution is only to refresh if the content has changed. And no timers or something fast changing.