Re: [Gimp-developer] marking a document/image as dirty/changed in a plugin

[Dan Hitt <dan hitt gmail com>]

On Mon, Nov 11, 2019 at 1:40 AM Ofnuts <ofnuts gmx com> wrote:

> On 11/10/19 5:23 AM, Dan Hitt via gimp-developer-list wrote:
> > The other hole is that i find that so far i cannot read and write a
> > pixel.
>
>
>  From my experiments:
>
> - start an "undo group": this marks the image "dirty"
>
> - attach an "undoable" parasite
>
> - end the undo group and exit
>
> At that point if you list the parasites you find the one that was added
>
> If you then Ctrl-Z and list the parasites the added  parasite is gone.
>
>   <<< clipped >>>

Awesome, thank you so much Ofnuts!

It works in c as well, exactly as you describe, solving both the problem of
getting the document marked dirty, as well as providing a means for undoing
it.  This it fills in that first hole that i had.

dan