Function gtk_sys::gtk_drag_begin_with_coordinates

pub unsafe extern "C" fn gtk_drag_begin_with_coordinates(
    widget: *mut GtkWidget,
    targets: *mut GtkTargetList,
    actions: GdkDragAction,
    button: c_int,
    event: *mut GdkEvent,
    x: c_int,
    y: c_int
) -> *mut GdkDragContext