Is it possible in Gtk3 to make description field text use the space below “Description:” field, so it appears as a continuous flowing text, and not waste space. The widget in use is a GtkBox.
Not without placing the “Description” and related text in the same label widget.
To be fair, doing that would make the dialog less legible, not more.
Either you drop the “Description” label, and display the description text, as is, in a label spanning two columns; or you do what you’re doing right now.
Either you drop the “Description” label, and display the description text, as is, in a label spanning two columns; or you do what you’re doing right now.