Install libgwengui-gtk3-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libgwengui-gtk3-dev
Description:
Gwenhywfar GUI implementation for GTK3 (development files)
Gwenhywfar allows porting of your software to different operating systems like Linux, *BSD, Windows etc. It also provides some often needed modules such as configuration file handling, simple XML file parsing, IPC etc. . This package contains development files of the Gwenhywfar GUI implementation for GTK3.
Version: 4.20.0-1
Section: universe/libdevel