CireSnave <[email protected]> added the comment:
Wow. Thank you Eryk Sun. While that seems like a convoluted way to make a
type act like the type it is...it works. Verified it with the following code:
from ctypes import POINTER, c_char, sizeof, Structure
class char_from_c(c_char):
pass
print("Size of c_char vs size of char_from_c:")
print(sizeof(c_char))
print(sizeof(char_from_c))
class my_structure(Structure):
_fields_ = [
("first_char", char_from_c),
("second_char", char_from_c),
("third_char", char_from_c),
]
my_structure_object: my_structure = my_structure(97, 98, 99)
pointer_to_char_from_c_in_my_structure =
POINTER(c_char)(my_structure_object.first_char)
print("\nContents of pointer_to_char_from_c_in_my_structure:")
print(pointer_to_char_from_c_in_my_structure.contents)
print("\npointer_to_char_from_c_in_my_Structure[0]:")
print(pointer_to_char_from_c_in_my_structure[0])
print("\nValues from my_structure_object:")
character_counter = 0
while character_counter < sizeof(my_structure_object):
print(pointer_to_char_from_c_in_my_structure[character_counter])
character_counter += 1
...which gave me the following results:
Size of c_char vs size of char_from_c:
1
1
Contents of pointer_to_char_from_c_in_my_structure:
c_char(b'a')
pointer_to_char_from_c_in_my_Structure[0]:
b'a'
Values from my_structure_object:
b'a'
b'b'
b'c'
Again...Thank you. Closing this "bug" as it is weird...but not a bug.
----------
resolution: -> not a bug
stage: -> resolved
status: open -> closed
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue45285>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
