[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Watching a variable (array) for change

Subject: Re: Watching a variable (array) for change
From: Brian G <brian@xxxxxxxxxxxxxxxx>
Date: Thu, 29 Oct 2026 02:11:16 -0700
To: user@xxxxxxxxxxxxxxxxxxxxxx

One more thing, it uses fast, so the first time used it can take 30seconds or so to build with the jit.

but once built it is cached and there is no delay after first time used.
On 10/29/26 02:02, Brian G wrote:

Try the shmmem library from the software farm. It allows you to createvariables that will raise an event when changed. When created ordestroyed. 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:

__________________________________________--- cut here_____________________________________

' 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 AsBoolean)


    Print "b set to :";; value

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

End

_____________________________________________________________ cut here________________________________________________________________



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


--
~~~~ Brian

Attachment: OpenPGP_0x78BFB26402F48419.asc
Description: OpenPGP public key

Attachment: OpenPGP_signature.asc
Description: OpenPGP digital signature

Follow-Ups:
Re: Watching a variable (array) for change	Bruce Steers <bsteers4@xxxxxxxxx>

References:
Watching a variable (array) for change	Bruce Steers <bsteers4@xxxxxxxxx>
Re: Watching a variable (array) for change	BB <adamnt42@xxxxxxxxx>
Re: Watching a variable (array) for change	Brian G <brian@xxxxxxxxxxxxxxxx>