I struggled to use an IDE as a first goal, with GUI builder as a second goal, that can cooperate with 3DGS.
I tried basicly the Eclipse with Cygwin and alternated with MinGW. I was able the sample program get to work.

At the second goal, i wasn't able to create an environment that works successful.
That is the most possible, my knowledge was poor.
I remark, i used Google extensively, and i made approximately twenty or more variations.
As a GUI builder i tried WxWidgets, the result was: tragic.
As a GUI builder i tried GTK, the result was: weak. I couldn't get a working executable.

So, i gave up everything, and i began from the scratch.
Finally, i have found Qt. It works! Together with 3DGS!
Unfortunately, have to throw up using Eclipse, although its features are great.
But this time it seems to me, Qt Creator has enough abilities to create well working projects for using the 3DGS engine.