Sets the widget that should be set as default widget while the popover is shown (see gtk_window_set_default()). #GtkPopover remembers the previous default widget and reestablishes it when the popover is dismissed.
the new default widget, or %NULL
3.18
See Implementation
Sets the widget that should be set as default widget while the popover is shown (see gtk_window_set_default()). #GtkPopover remembers the previous default widget and reestablishes it when the popover is dismissed.