#210 Building with GTK3

[Aupeix Alain]

Hi,
Having a graphic crash with Xubuntu 24.04, I updated to 26.04. After solving the problem, I tried to run my Harbour/HwGUI applications build under Xubuntu 16.04.
They didn't work anymore, so I wanted to build them.
It first failed as libgtk+-2.0 wans(t installed.
So I decided to build with GTK3.
I first failed for a few reasons which are explained in foined files.
So I installed libgtk+-2.0 and build
With the help of IA, I correct some errors, but I don't finish the job.

I hope you will solve the problems encountered.

PS: I joint the complete exchange between me and IA (in french), and also a summary of the work done and to do (in english).

Thanks
A+