[ Version ( since = "3.0" ) ]
public void set_popup_fixed_width (bool fixed)
Specifies whether the popup’s width should be a fixed width.
Use [class@Gtk.DropDown]
If fixed is true, the popup's width is set to match the allocated width of the combo box.
| this |
a `GtkComboBox` |
| fixed |
whether to use a fixed popup width |