Re: [Gimp-developer] [Gimp-gui] GTK3 "empty black window"/"black flash" bug that affects GIMP-2.99

On 08/05/2018 05:22 AM, Jehan wrote:

Checking the latest 3.30 tarball from, it appears the fix
hasn't been incorporated into any actual GTK3 releases.

I was wondering what you meant by 3.30. You meant 3.22.30, last release of 3.22.

Oh, drat, of course it should be 3.22.30 - the download folder link I gave is correct, but I accidentally left the ".22" out when referring to the actual version of GTK3 that I downloaded and patched - sorry!

Also I just checked, your commit is available in a release: 3.23.0 which is an unstable release.

We are actually waiting a bit to bump the dependency of GTK+ a bit, but we are planning to. I also wait for a fix I made (also available in 3.23.0) and Mitch told me he also has a commit there.
So this bump will happen sooner rather than later, no problem. :-)


So I downloaded the latest GTK3 tarball, applied the fix (involves
adding a couple of extra lines of code to gdk/x11/gdkwindow-x11.c),
and compiled/installed it in my GIMP-2.99 prefix. This fix does indeed
get rid of the "black flash" problem.

My patched version of 3.22.30 did get rid of the "black window" problem, but also seems to have introduced an issue where it was no longer possible to grab the center left-right panel dividing line when using a toolbox in multi-window mode. Leastways going back to the Gentoo-installed 3.22.30 did get rid of the problem of not being able to grab and move the center dividing line. Bleh.

You may also use the unstable tarballs from 3.23 so that you don't have to patch yourself. :-)

I'll give that a try -thanks! for the link.


Thanks anyway for this informative email!


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