Gtk - How to set box size?

Question

I have the following window on my project:

And this is basically the code that configure the main boxes:

add(main_box);
// Add boxes
main_box.pack_start(function_box, Gtk::PACK_SHRINK, 10);
main_box.pack_start(viewport_box);

I would to like to expand the viewport_box to ocupe a width larger than the half of the window. How can I do this?

Answer 1

您可以更改PACK_SHRINK到PACK_EXPAND_WIDGET或使用该版本的pack_start ，它接受布尔expand和fill参数