GtkToolItem::set_use_drag_window
void set_use_drag_window(bool
use_drag_window);
Sets whether toolitem has a drag window. When true the
toolitem can be used as a drag source through
drag_source_set. When the tool item has
a drag window it will intercept all events, even those that would
otherwise be sent to a child of toolitem.
参照:
get_use_drag_window()