Install libgnomecanvasmm-2.6-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libgnomecanvasmm-2.6-doc
Description:
C++ wrappers for libgnomecanvas2 (documentation)
libgnomecanvas is a high-level, structured graphics library. libgnomecanvasmm is the C++ wrapper for libgnomecanvas. . This package contains reference documentation and examples.
Homepage: http://www.gtkmm.org/
Version: 2.26.0-2
Section: universe/doc