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