我尝试用Cython Package 一个简短的C函数（显示一个Windows MessageBox），并向该函数传递一个指针（int）（由wxPython生成）。
强制转换指针似乎不能正常工作，至少到达C级别的指针是不同的。
我错在哪里？

文件 cpp_test-cpp

#include "cpp_test.h"

Test::Test() {
}

Test::~Test() {
}

int Test::Message(HWND hWnd, LPCWSTR lpText, LPCWSTR lpCaption, int uType) {
       printf("Test::Message Handle as seen from C++: %d\n", hWnd);
       return MessageBoxW(hWnd, lpText, lpCaption, uType);
}

字符串

文件 cpp_test.h

#pragma once

#include <Windows.h>
#include <stdio.h>

class Test {
    public:
    Test();
    ~Test();
    int Message(HWND hWnd, LPCWSTR lpText, LPCWSTR lpCaption, int uType);
};

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文件 test.pxd

cdef extern from "Windows.h":
    ctypedef Py_UNICODE WCHAR
    ctypedef const WCHAR* LPCWSTR
    ctypedef void* HWND

cdef extern from "cpp_test.h":
    cdef cppclass Test:
        Test()
        int Message(HWND hWnd, LPCWSTR lpText, LPCWSTR lpCaption, int uType);

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文件 test.pyx

cimport test

cdef class pyTest:
    cdef Test* thisptr

    def __cinit__(self):
        print "__cinit__"
        self.thisptr = new Test()

    def __dealloc__(self):
        print "__dealloc__"
        del self.thisptr

    cpdef PyMessage(self, HandleToWindow):
        print "pyTest::PyMessage Handle before casting :" + str(HandleToWindow)
        if HandleToWindow == "NULL":
            title = u"Windows Interop Demo - Python"
            return self.thisptr.Message(NULL, u"Hello Cython \u263a", title, 0)
        else:
            hwnd =<HWND> HandleToWindow
            print "pyTest::PyMessage after recasting to object casting: " + str(<object>hwnd)
            title = u"Windows Interop Demo - Python"
            return self.thisptr.Message(hwnd, u"Hello Cython \u263a", title, 0)

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文件 useTest.py

from test import pyTest

k = pyTest()

print k.PyMessage(12345)

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