gambas3-gb-gtk3 software package provides Gambas GTK+3 component, you can install in your Ubuntu 17.04 (Zesty Zapus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gambas3-gb-gtk3
gambas3-gb-gtk3 is installed in your system.
Make ensure the gambas3-gb-gtk3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep gambas3-gb-gtk3 *
You will get with gambas3-gb-gtk3 package name, version, architecture and description in a table
| Distro | Ubuntu 17 04 zesty zapus |
| Section | Library development |
| Package | gambas3-gb-gtk3 |
| Version | 3.9.1-1ubuntu2 |
| Description | Gambas GTK+3 component |
| Sub Section | libdevel |