python 调用dll

首先用visual studio写个dll。 // TestDll.cpp : Defines the entry point for the DLL application. //

#include “stdafx.h” #include <iostream> using namespace std;

#ifdef _MANAGED #pragma managed(push, off) #endif

#ifdef __cplusplus #define EXPORT extern “C”__declspec(dllexport) #else #define EXPORT __declspec(dllexport) #endif EXPORT int HelloWorld() {  cout <<“hello world” <<endl;  return 0; }

BOOL APIENTRY DllMain( HMODULE hModule,                        DWORD  ul_reason_for_call,                        LPVOID lpReserved       ) {     return TRUE; }

#ifdef _MANAGED #pragma managed(pop) #endif

然后用C++ 来调用（当然这里可选） // CallDll.cpp : Defines the entry point for the console application. //

#include “stdafx.h” #include <windows.h>

int _tmain(int argc, _TCHAR* argv[]) {  HMODULE hDll = ::LoadLibrary(TEXT(“TestDll.dll”));  typedef int pHelloWorld();  pHelloWorld *pHello = (pHelloWorld *)::GetProcAddress(hDll, “HelloWorld”);  pHello();  return 0; }

而python的调用也很简单：

from ctypes import * fileName=”TestDll.dll” func=cdll.LoadLibrary(fileName) #print func.HelloWorld() func.HelloWorld()

如果有参数记得转换成C类型的。比如用c_int() 而参数如果是指针类型用 byref 转换。

转载于:https://www.cnblogs.com/soft115/archive/2011/08/10/2134087.html

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