Dragging position information.

• pos - Evas Coordinate
• action - The drag action
• format - The drag format
• item - The item object. It is only available for container object.

struct Efl.Dnd.Drag_Pos {
    pos: Eina.Position2D;
    action: Efl.Ui.Selection_Action;
    format: Efl.Ui.Selection_Format;
    item: Efl.Canvas.Object;
}

typedef struct _Efl_Dnd_Drag_Pos {
    Eina_Position2D pos;
    Efl_Ui_Selection_Action action;
    Efl_Ui_Selection_Format format;
    Efl_Canvas_Object *item;
} Efl_Dnd_Drag_Pos;