Basically I have a ctype structure like below:

class A(Structure):
fields = [('x', c_uint),
('y', c_uint),
('z', c_char_p),
('a', c_wchar_p),
('b', c_uint),
('c', c_uint),
('d', c_uint),
('e', c_uint),
('f', c_uint),
('g', c_uint)]
pack = 1

Now i have a below function where i am instantiating the class and setting the values

def func( self,x,y):

    ins = A()

    ins.x = 3

    ins.y = 4

now i need to pass the pointer to the memory location of the structure
ptr = pointer(ins) also tried addressof
passing the pointer to a function(memory address basically)
func2(param1,ptr)
now i want to check the all values like x,y,z etc from the pointer if there are any changes
ptr.contents()-->not working for me

so if anyone know how to get the values back , that would be great help.
i know there are may be any methods that i can use, also tried. but everything fails