Gtkmm Begins Preparing For GTK4, Now Uses C++14

Gtkmm, the project providing the de facto C++ interface for GTK+, is preparing for the GTK+ 4.0 era.

Gtkmm 3.89.1 was released today as the first release based against the GTK+ 4.0 development code and can be installed in parallel with gtkmm-3.0. Aside from basing against GTK 4.0, gtkmm now uses C++14, has removed deprecated APIs, and other changes. Gtkmm using C++14 succeeds its C++11 usage.

Other recent gtkmm changes can be found via their Git repository.

Gtkmm developer Murray Cumming shared on his blog about gtkmm 4.0 development starting. The new code also allows for using libsigc++ 3.0 and they are weighing other fundamental changes too for what they call "the world of modern C++."