Robert Roessler:

> While all of this is semi-believable, this does not seem to be what is
> happening... 

   Eh? My message was replying to Armel's about display update
transactions. The relevant post to your issue was the one about
GtkRange.

> Muwahahaha... how about this: Obviously Neil knows what is up with
> SC_LASTSTEPINUNDOREDO, but it *seems* to be just what I wanted!

   SC_LASTSTEPINUNDOREDO is there so you can avoid expensive updating
of UI controls such as toolbar buttons.

> I wanted a way of telling when you are at the "end" of an Undo/Redo
> sequence, so that calling SetScrollBars could be deferred until
> then... 
> ...
> 
> It appears to work fine, but I look forward to hearing from Neil that
> a) this will work, 

   It may work. I haven't been able to think of a good reason why it wouldn't.

> or b) "X" is why he wasn't using this flag.

   It wasn't added for that purpose.

   Neil

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