GTK+ Developer Matthias Clasen gtk3-demo 1 User Commands gtk3-demo Demonstrate GTK+ widgets gtk3-demo --help gtk3-demo is a collection of examples. Its purpose is to demonstrate many GTK+ widgets in a form that is useful to application developers. The application shows the source code for each example, as well as other used resources, such as ui files and icons. The following options are understood: -h, --help Show help options