python 调用 c++ dll 返回的 const char*

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C++

为 const char *

#pragma once
#include <iostream>
#define PYAPI _declspec(dllexport)
extern "C" {
PYAPI const char* runCapture(char* ip, int port, char* username, char* password, char* channel, int preset, char* type, char* filepath);
}

python

irr = CDLL("./captureWheel_dll.dll")
irr.runCapture.restype = ctypes.c_char_p //定义返回类型

tVersion = irr.runCapture(ip, port, username, password, channel, preset, capturetype, filepath)
s = ""
for i in range(0, len(tVersion)):
s += chr(tVersion[i])
print('version = ', s)
# 返回值打印为：( version = 1.0)
print("version = ", (tVersion))
# 返回值打印为：( version = b'1.0')