Re: Watching a variable (array) for change

[Brian G <brian@xxxxxxxxxxxxxxxx>]

Try the shmmem library from the software farm. It allows you to create 
variables that will raise an event when changed. When created or 
destroyed. That includes arrays
Hope this helps. once the library is installed, make the executable.
There is a wiki with info:https://github.com/justlostintime/ShmMem/wiki
in your code:
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' Gambas module file

Use ":westwood/shmmem:2.2"
Class Shmmem

Public Sub Main()

    Print "hello world"
    Dim mymem As New Shmmem
    Print "Memory defined"

    With mymem
        !a = 1
        !b = "this"
        .notify("b", Me)
        !c = ["this", 2, 3, 4, "that"]
        Print !a, !b, !c
        .["c", 0] = "pull"
        Print !c[0]
        .b = "hellow there i changed"
    End With
    Print "Done"
    mymem.close()
    Quit 0

Catch
    Error "Script Error >";; error.text & "\n" & error.where

End

Public Sub b_changed(varname As String, value As Variant, TimedOut As 
Boolean)

    Print "b set to :";; value

Catch
    Print "oops user 1";; error.text;; error.where

End
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On October 28, 2026 11:42:50 PM PDT, BB <adamnt42@xxxxxxxxx> wrote:

   On 26/10/26 7:21 am, Bruce Steers wrote:

>     Is is possible to watch a variable for changes?
>
>     I'm trying to do something with TextEditor that reacts when a
>     procedure Limit is Collapsed / Expanded
>     I've managed to get something working when mouse clicks do it but
>     there's other ways to collapse/expand limits too so looking for a
>     simpler way.
>
>     I can get a pointer to the TextEditor $aFold variable via the
>     TextEditor._GetFolding() method but is there a way to monitor an
>     Array and react to any changes?
>
>     I've removed an adapted gb.form.editor source from my program and
>     and trying to replace all my mods via auto-inheritance of the main
>     component instead.
>
>     I did have a TextEditor Fold event that triggered when a procedure
>     was folded/expanded. I'm trying to emulate that.
>     Having the Fold event added to master would be good but won't
>     really help me with backward compatibility so i'm looking for a
>     workaround.
>
>     Respects
>     BruceS
   This is not easy. I have been digging down into it and trying to
   find a way to raise a signal where an address is written to at the
   OS level. It is not an easy thing to do, in fact it may be impossible.

   But it has been a bit of a poser to be sure.

   hmmm

   b

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