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Catch Value Change Event in MemoryRecord

 
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AntumDeluge
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PostPosted: Thu Feb 21, 2019 2:27 pm    Post subject: Catch Value Change Event in MemoryRecord Reply with quote
So I know there is MemoryRecord.OnActivate & MemoryRecord.OnDeactivate to catch events when the record is activated & deactivated. But is there a property to catch events for when MemoryRecord.Value changes?[/code]

Edit: Something that could be used like:
Code:
local rec = getAddressList().getMemoryRecord(x)
rec.OnChange = function(sender)
    print('New value: ' .. rec.Value)
end

Edit: I would prefer to not have to use a Timer.
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Dark Byte
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PostPosted: Thu Feb 21, 2019 2:47 pm    Post subject: Reply with quote
You can use OnGetDisplayValue and use a variable to keep track of the addresses

e.g:

Code:

local oldvalue=nil
AddressList[0].OnGetDisplayValue=function(sender,displayedvalue)
  local changed=oldvalue and (oldvalue~=displayedvalue)
  oldvalue=displayedvalue

  if changed then
    print('New value: ' .. displayedvalue)
  end
  return false,displayedvalue --false because you don't want to change the displayed value
end


(It's still using a timer though, for faster, use a debug register breakpoint)
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AntumDeluge
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Posts: 48
PostPosted: Thu Feb 21, 2019 4:45 pm    Post subject: Reply with quote
Okay, I will try that.

Is MemoryRecord.OnGetDisplayValue documented? Or is that just a custom method that you came up with?

Edit: Okay, I see. Looks like it uses a built-in timer so I don't have to create one myself.
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