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我有DLL,C++接口与他一起工作。在bcb中,msvc工作正常。我想使用Python脚本来访问这个库中的函数。 使用Swig生成python-package。从DLL运行函数访问冲突
文件setup.py
import distutils
from distutils.core import setup, Extension
setup(name = "DCM",
version = "1.3.2",
ext_modules = [Extension("_dcm", ["dcm.i"], swig_opts=["-c++","-D__stdcall"])],
y_modules = ['dcm'])
文件dcm.i
%module dcm
%include <windows.i>
%{
#include <windows.h>
#include "../interface/DcmInterface.h"
#include "../interface/DcmFactory.h"
#include "../interface/DcmEnumerations.h"
%}
%include "../interface/DcmEnumerations.h"
%include "../interface/DcmInterface.h"
%include "../interface/DcmFactory.h"
运行这些指令(Python是具有延伸的.py相关联)
setup build
setup install
使用这个DLL
import dcm
f = dcm.Factory() #ok
r = f.getRegistrationMessage() #ok
print "r.GetLength() ", r.GetLength() #ok
r.SetLength(0) #access violation
在最后一个字符串我得到访问冲突。我使用输入参数访问每个函数。
DcmInterface.h(接口)
class IRegistrationMessage
{
public:
...
virtual int GetLength() const = 0;
virtual void SetLength(int value) = 0;
...
};
uRegistrationMessage.cpp(在DLL实现)
class TRegistrationMessage : public IRegistrationMessage
{
public:
...
virtual int GetLength() const
{
return FLength;
}
virtual void SetLength(int Value)
{
FLength = Value;
FLengthExists = true;
}
...
};
厂
DcmFactory.h(使用DLL中客户代码)
class Factory
{
private:
GetRegistrationMessageFnc GetRegistration;
bool loadLibrary(const char *dllFileName = "dcmDLL.dll")
{
...
hDLL = LoadLibrary(dllFileName);
if (!hDLL) return false;
...
GetRegistration = (GetRegistrationMessageFnc) GetProcAddress(hDLL, "getRegistration");
...
}
public:
Factory(const char* dllFileName = "dcmDLL.dll")
{
loadLibrary(dllFileName);
}
IRegistrationMessage* getRegistrationMessage()
{
if(!GetRegistration) return 0;
return GetRegistration();
};
};
也许你可以从生成的代码中添加调用'Factory :: SetLength()'的行,并从'DcmFactory.h'中添加原始声明? – 2009-10-27 18:54:05
... arg1 = reinterpret_cast(argp1); ecode2 = SWIG_AsVal_int(OBJ1,&val2); 如果(!SWIG_IsOK( “在方法“”'IRegistrationMessage_SetLength“ ” '参数 “ ”2“,” 类型的“' ”INT“ ecode2)){ SWIG_exception_fail(SWIG_ArgError(ecode2), “'”); } arg2 = static_cast < int >(val2); (arg1) - > SetLength(arg2); ... –
Xeningem
2009-10-28 08:14:35