Sets whether tool_item has a drag window. When true the
toolitem can be used as a drag source through gtk.widget.Widget.dragSourceSet.
When tool_item has a drag window it will intercept all events,
even those that would otherwise be sent to a child of tool_item.
Sets whether tool_item has a drag window. When true the toolitem can be used as a drag source through gtk.widget.Widget.dragSourceSet. When tool_item has a drag window it will intercept all events, even those that would otherwise be sent to a child of tool_item.