Sorry about forgetting to reply to the list when I asked you if you wanted to edit images in C source code.

Since I know that's not what you want to do, I'll ask, have you considered asking your questions on the developers lists?

I just searched the web using google for "gimp developers" and got back a list of stuff you might be interested in, including the url of the gimp developers mail list archive and the gimp gui developers mail list archive.

(If you ask about your toggles on the gui mail list, it may be the only question for October. )

https://www.google.co.jp/search?q=gimp+developers

I think your already found the GIMP wiki and FAQ.

Perhaps the other links of immediate interest to you will be the mailing lists page where you can find the developers and GUI lists, and the GIMP from source link. But that's just my guess.

I don't think many of the subscribers to the users list here will be able to answer your questions, so do ask on the developers and GUI lists.

On Wed, Oct 26, 2016 at 11:50 PM, John Smith wrote:

Oopsie. Found it here. It's the "hacking: Netbeans" that put me off at first.

https://wiki.gimp.org/wiki/Hacking:Netbeans

Cordialement,

John

http://johnsmithimages.net

2016-10-26 16:39 GMT+02:00 John Smith :

The title says it all. If I go for the Gimp, will I be able to open the source file in Netbeans and tweak it to my needs using C++?

I'll stick with the tarballs at the beginning.

Cordialement,

John

http://johnsmithimages.net

2016-10-26 14:00 GMT+02:00 :

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Today's Topics:

1. Luminosity Masks (Andrew Clarke)

----------------------------------------------------------------------

Message: 1 Date: Wed, 26 Oct 2016 09:17:12 +0100 From: Andrew Clarke
To: "gimp-user-list@gnome.org"
Subject: [Gimp-user] Luminosity Masks Message-ID:
Content-Type: text/plain; charset=utf-8

OSX GIMP 2.8.14 - http://gimp.lisanet.de

If I apply a luminosity mask to an image by selecting a RGB channel(from a layer that has been desatuarated via luminosity) with any of red, green or blue channels as the mask, if I then go on to adjust by curves (*value*) I get a shift in colour, as you would expect if you where using red,green or blue separately in curves not by value.

Alternatively if I create a new layer desaturated to luminosity as you would before, but then drag that *layer* to the channel dialog box,then apply that new channel as a layer mask, I get the expected adjustment using curves(value) that it does not shift the colour.

Also if I apply a mask from a RGB channel, then remove that mask and layer, also delete the dragged channel, add a new layer I cannot desaturate that new layer as it maintains colour. If I do the same with the original layer (opened image) you can desaturate that original layer.

Thanks Andrew

Joel Rees

I'm imagining I'm a novelist:
http://joel-rees-economics.blogspot.com/2016/04/economics-101-novel-rough-draft-index.html

Oh, ...

On Sat, Oct 29, 2016 at 8:43 AM, Joel Rees wrote:

[...]
(If you ask about your toggles on the gui mail list, it may be the only question for October. )
[...]

I could guess that you want the history pallette/dialog.

Look in the "Wnidow" menu for "Dockable Dialogs".

In "Dockable Dialogs", you'll find the history dialog.

(In Japanese, that's

ウィンドウ => コッキング可能なダイアログ => 作業履歴

but I don't have an English or French session open, so you'll have to interpret the names of those. Should be something similar.)

That will allow you to move back and forward through undos. Very useful.

Joel Rees

I am not running for president,
just trying to solve the world's problems
in my own mind.
http://joel-for-president.blogspot.com/