ctypes：从任意整数构造指针
出于低级目的，我需要从任意地址（以整数给出）构造一个 ctypes 指针。例如：
INTP = ctypes.POINTER(ctypes.c_int)
p = INTP(0x12345678) # i *know* this is the address
但是所有这些尝试都会导致
TypeError: expected c_long instead of int
我能做些什么来克服这个问题吗？如果有人想知道我为什么需要这个，这样做是为了从 win32file.PyOVERLAPPED 中提取 OVERLAPPED 结构，用于将 ctypes 公开的函数与 win32file 包装的 API 集成。
谢谢，
-托默
For low-level purposes, I need to construct a ctypes pointer from an arbitrary address, given as an integer. For instance:
INTP = ctypes.POINTER(ctypes.c_int)
p = INTP(0x12345678) # i *know* this is the address
But all such attempts result in
TypeError: expected c_long instead of int
Is there anything I can do to overcome this? In case someone wonders why I need this, it's done so as to extract the OVERLAPPED struct from a win32file.PyOVERLAPPED, for integrating ctypes-exposed functions with win32file wrapped APIs.
Thanks,
-Tomer
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您可以使用
ctypes.cast(addr, type)。我将扩展您的示例以通过已知对象获取地址，以演示：输出：
You can use
ctypes.cast(addr, type). I'll extend your example to acquire an address via a known object, to demonstrate:Output: