ctypes.pointer，ctypes.POINTER和ctypes.byref有什么区别？ [英] What is the difference between ctypes.pointer, ctypes.POINTER, and ctypes.byref?

问题描述

在ctypes中，指针和BYREF有什么区别？两者似乎都是将指针传递给函数的一种方法，例如作为输出参数。

In ctypes, what is the difference between pointer and byref? They both seem like a way to pass a pointer to a function, for example as an output parameter.

推荐答案

从功能上讲，它们是

但是， python文档确实指出，

pointer由于构造了一个真正的指针对象而做了很多工作，因此如果不需要该指针对象，使用byref会更快。在Python本身中。

pointer does a lot more work since it constructs a real pointer object, so it is faster to use byref if you don't need the pointer object in Python itself.

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