[Crysstalis]

>A large part of even non-trivial applications do not do custom drawing - and many do not do any custom drawing at all.

Then those parts will be easier to port as well, so there is not much benefit to having this backwards compatibility when more benefits can be gained by porting. This is why most GNOME applications have ported.

>Even if that is the case, it still has all the other backwards compatibility issues i mentioned.

Those issues would be even worse by trying to hack various things into GTK1.

>The effort i mentioned here was on designing backwards compatible APIs and libraries

My point was that some things are impossible to design in a backwards compatible way. For example, anything that leads to certain assumptions getting hard coded in the app. You cannot API design your way out of those type of problems. The app has to be rewritten or ported.

>it is not like i expect any Gtk developer to suddenly come across my posts and somehow get enlightened or something

Keep in mind that GTK developers have very likely already weighed the benefits of what you are suggesting and have decided that it is not worth it, for various reasons.