专家帮助迫切需要InterOp（Managed C ++？）问题 [英] EXPERT help URGENTLY NEEDED on InterOp (Managed C++?) issue
问题描述
我有一个C ++ DLL，我想在C＃项目中使用它。我实际上是很多高级C ++功能，如模板，部分/专用
模板，仿函数和回调。我也在我的C ++ DLL API中广泛使用STL容器，比如
std :: string，std :: vector和std :: map。
但是，我可以简化API，以便更容易使用C＃。
下面，是一个非常简单的概念证明。 C ++ DLL。如果有人能告诉我如何使用C＃中的Dll，我会非常感激。
感激不尽。
这是代码：
/ * C ++代码（标题）
（概念DLL的简单证明* /
#ifdef TESTDLL_EXPORTS
#define CCONV __declspec（dllexport）
#else
#define CCONV __declspec（dllimport）
#endif
typedef enum {
ONE，
TWO，
THREE>
} myEnum;
typedef struct mystruct_ {
int x;
float y;
char z [8] ;
} myStruct;
typedef int（* INT_FPTR）（const char *，const MyStruct *）;
class CCONV MyClass {
public：
MyClass（）;
MyClass（const MyClass&）;
MyClass& operator =（const MyClass&）;
~MyClass（）;
private：
//一些私人变量在这里..
};
class CCONV DClass：public MyClass {
public：
DClass（）;
DClass（const DClass&）;
DClass& operator =（const DClass&）;
~DClass（）;
const char * foo（void）;
int barney（int，myEnum，const myStruct *）; //抛出异常
void register_callback（INT_FPTR）;
private：
INT_FPTR cb;
$ b很多，谢谢
模板和STL
同时发出MSIL。
问候，
Jeff
***通过开发人员发送的指南 http://www.developersdex.com ***
" ET灰色" <是ne **** @ alpha-centauri.com>在消息中写道
news：dk ********** @ nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com ...
我想在C＃项目中使用C ++ DLL。我实际上使用了许多高级C ++功能，如模板，部分/专用模板，仿函数和回调。我也在我的C ++ DLL API中广泛使用st / :: std :: vector，std :: vector和std :: map等STL容器。
但是，我可以简化API使用C＃更容易使用。
下面是一个非常简单的概念证明。 C ++ DLL。如果有人能告诉我如何从C＃中使用这个Dll，我会非常感激：
这是代码：
/ * C ++代码（Header ）
（琐碎的概念证明DLL * /
#ifdef TESTDLL_EXPORTS
#define CCONV __declspec（dllexport）
#else
#define CCONV __declspec（ dllimport）
#endif
typedef enum {
ONE，
TWO，
三，
} myEnum;
typedef struct mystruct_ {
int x;
float y;
char z [8];
} myStruct;
typedef int（* INT_FPTR） （const char *，const MyStruct *）;
类CCONV MyClass {
public：
MyClass（）;
MyClass（const MyClass&）;
MyClass& operator =（const MyClass&）;
~MyClass（）;
私人：
//这里有一些私有变量..
};
public：
DClass（）;
DClass（const DClass&）;
DClass& operator =（const DClass& ）; <无线电通信/> ~DClass（）;
const char * foo（void）;
int barney（int，myEnum，const myStruct *）; //抛出异常
void register_callback（INT_FPTR）;
私人：
INT_FPTR cb;
};
非常感谢
抛出异常是什么意思？，barney是一个C ++成员函数，
你不能用C＃创建本机C ++类的实例，所以你不能称之为
成员函数。
您唯一的选择是：
1.在托管程序集中创建托管C ++类（使用vs2005 C ++ / CLI）
包装您的非托管C ++类（ es）。
2.将您的公共接口（暴露给C＃）转换为托管C ++类，并使用C ++ / CLI（vs2005）编译
。
Willy。
Willy Denoyette [MVP]写道：
" ET灰色" <是ne **** @ alpha-centauri.com>在消息中写道
新闻：dk ********** @ nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com ...
我想在C＃项目中使用C ++ DLL。我实际上使用了许多高级C ++功能，如模板，部分/专用模板，仿函数和回调。我也在我的C ++ DLL API中广泛使用st / :: std :: vector，std :: vector和std :: map等STL容器。
但是，我可以简化API使用C＃更容易使用。
下面是一个非常简单的概念证明。 C ++ DLL。如果有人能告诉我如何从C＃中使用这个Dll，我会非常感激：
这是代码：
/ * C ++代码（Header ）
（琐碎的概念证明DLL * /
#ifdef TESTDLL_EXPORTS
#define CCONV __declspec（dllexport）
#else
#define CCONV __declspec（ dllimport）
#endif
typedef enum {
ONE，
TWO，
三，
} myEnum;
typedef struct mystruct_ {
int x;
float y;
char z [8];
} myStruct;
typedef int（* INT_FPTR） （const char *，const MyStruct *）;
类CCONV MyClass {
public：
MyClass（）;
MyClass（const MyClass&）;
MyClass& operator =（const MyClass&）;
~MyClass（）;
私人：
//这里有一些私有变量..
};
public：
DClass（）;
DClass（const DClass&）;
DClass& operator =（const DClass& ）;
~DClass（）;
const cha r * foo（void）;
int barney（int，myEnum，const myStruct *）; //抛出异常
void register_callback（INT_FPTR）;
私人：
INT_FPTR cb;
};
非常感谢
抛出异常是什么意思？，barney是一个C ++成员函数，
这个陈述有什么难以理解的？ C ++方法*可以*
抛出异常 - 也许是托管C ++ / C＃（或者应该是C哑）
类不能？
你不能用C＃创建本机C ++类的实例，所以你不能调用
成员函数。
你唯一的选择是：
1.创建一个托管C ++类一个托管程序集（使用vs2005 C ++ / CLI）
包装你的非托管C ++类。
< snip>
我已经知道了。每个人（包括MS站点告诉我，我需要
围绕我的C ++类编写托管C ++包装类 - 但是
没有任何有用的示例 - 大多数示例与从C＃调用C函数的
有关。到目前为止，它一直都是谈话而没有例子 -
有人*实际上*曾经从C＃调用C ++类？如果它不能完成或者从来没有在现实世界中尝试过 - 只需要男人
就足以说明发布毯子线了：编写托管C ++
$ C $ b类围绕你的C ++类。还没有人（包括MS
本身）afaik，实际上提供了一个使用C ++类的例子
从C ++ DLL导出 - 所以来吧：可以做或不做？。如果是的话
（每个人都告诉我它可以 - 但没有例子） - 地狱怎么样是不是已经完成了什么？有人真的知道了吗？我提供了一个简单的无需支持
C ++ DLL并且预期在至少有一些伪代码显示我如何从C＃调用
2/3函数 - 显然，没有人真的知道如何做到这一点....
Hi,
I have a C++ DLL that I want to use from a C# project. I am actually
usng a lot of advanced C++ features like templates, partial/specialized
templates, functors and callbacks. I am also using STL containers like
std::string, std::vector and std::map quite extensively in my C++ DLL API.
However, I can simplify the API so as to make it easier to use from C#.
Below, is a very simple "proof of concept" C++ DLL. I would be extremely
grateful if someone could show me how I can use this Dll from C#:
Here is the code:
/* C++ code (Header)
(trivial proof of concept DLL */
#ifdef TESTDLL_EXPORTS
#define CCONV __declspec(dllexport)
#else
#define CCONV __declspec(dllimport)
#endif
typedef enum {
ONE ,
TWO ,
THREE
} myEnum;
typedef struct mystruct_ {
int x ;
float y ;
char z[8] ;
} myStruct ;
typedef int (*INT_FPTR)(const char*, const MyStruct*) ;
class CCONV MyClass {
public:
MyClass();
MyClass(const MyClass&);
MyClass& operator = (const MyClass&);
~MyClass();
private:
//some private variables here ..
};
class CCONV DClass : public MyClass {
public :
DClass();
DClass(const DClass&);
DClass& operator = (const DClass&);
~DClass();
const char* foo(void);
int barney(int, myEnum, const myStruct*); //throws an exception
void register_callback( INT_FPTR ) ;
private:
INT_FPTR cb ;
};
Many Thanks
ET I am no expert, but VS2005 managed C++ supports templates and the STL
while emitting MSIL.
Regards,
Jeff
*** Sent via Developersdex http://www.developersdex.com ***
"E.T. Grey" <ne****@alpha-centauri.com> wrote in message
news:dk**********@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...Hi,
I have a C++ DLL that I want to use from a C# project. I am actually usng
a lot of advanced C++ features like templates, partial/specialized
templates, functors and callbacks. I am also using STL containers like
std::string, std::vector and std::map quite extensively in my C++ DLL API.
However, I can simplify the API so as to make it easier to use from C#.
Below, is a very simple "proof of concept" C++ DLL. I would be extremely
grateful if someone could show me how I can use this Dll from C#:
Here is the code:
/* C++ code (Header)
(trivial proof of concept DLL */
#ifdef TESTDLL_EXPORTS
#define CCONV __declspec(dllexport)
#else
#define CCONV __declspec(dllimport)
#endif
typedef enum {
ONE ,
TWO ,
THREE
} myEnum;
typedef struct mystruct_ {
int x ;
float y ;
char z[8] ;
} myStruct ;
typedef int (*INT_FPTR)(const char*, const MyStruct*) ;
class CCONV MyClass {
public:
MyClass();
MyClass(const MyClass&);
MyClass& operator = (const MyClass&);
~MyClass();
private:
//some private variables here ..
};
class CCONV DClass : public MyClass {
public :
DClass();
DClass(const DClass&);
DClass& operator = (const DClass&);
~DClass();
const char* foo(void);
int barney(int, myEnum, const myStruct*); //throws an exception
void register_callback( INT_FPTR ) ;
private:
INT_FPTR cb ;
};
Many Thanks
What do you mean by throws an exception?, "barney" is a C++ member function,
you can''t create instances of native C++ classes from C#, so you can''t call
member functions.
Your only options are:
1. create a managed C++ class in a managed assembly (using vs2005 C++/CLI)
that wrap your unmanaged C++ class(es).
2. convert your public interfaces (exposed to C#) to managed C++ classes and
compile with C++/CLI (vs2005).
Willy.
Willy Denoyette [MVP] wrote:
"E.T. Grey" <ne****@alpha-centauri.com> wrote in message
news:dk**********@nwrdmz01.dmz.ncs.ea.ibs-infra.bt.com...Hi,
I have a C++ DLL that I want to use from a C# project. I am actually usng
a lot of advanced C++ features like templates, partial/specialized
templates, functors and callbacks. I am also using STL containers like
std::string, std::vector and std::map quite extensively in my C++ DLL API.
However, I can simplify the API so as to make it easier to use from C#.
Below, is a very simple "proof of concept" C++ DLL. I would be extremely
grateful if someone could show me how I can use this Dll from C#:
Here is the code:
/* C++ code (Header)
(trivial proof of concept DLL */
#ifdef TESTDLL_EXPORTS
#define CCONV __declspec(dllexport)
#else
#define CCONV __declspec(dllimport)
#endif
typedef enum {
ONE ,
TWO ,
THREE
} myEnum;
typedef struct mystruct_ {
int x ;
float y ;
char z[8] ;
} myStruct ;
typedef int (*INT_FPTR)(const char*, const MyStruct*) ;
class CCONV MyClass {
public:
MyClass();
MyClass(const MyClass&);
MyClass& operator = (const MyClass&);
~MyClass();
private:
//some private variables here ..
};
class CCONV DClass : public MyClass {
public :
DClass();
DClass(const DClass&);
DClass& operator = (const DClass&);
~DClass();
const char* foo(void);
int barney(int, myEnum, const myStruct*); //throws an exception
void register_callback( INT_FPTR ) ;
private:
INT_FPTR cb ;
};
Many Thanks
What do you mean by throws an exception?, "barney" is a C++ member function,
What is so difficult to understand by this statement?. C++ methods *can*
throw exceptions - maybe managed C++/C# (or should that be C dumb)
classes can''t ?
you can''t create instances of native C++ classes from C#, so you can''t call
member functions.
Your only options are:
1. create a managed C++ class in a managed assembly (using vs2005 C++/CLI)
that wrap your unmanaged C++ class(es).
<snip>
I already knew that. Everybody (including the MS site tells me I need to
write managed C++ wrapper classes around my C++ classes - but there is
no useful examples given anywhere - most of the examples are to do with
calling C functions from C#. So far its been all talk and no examples -
has anyone *actually* EVER called C++ classes from C#? If it can''t be
done or it has never been tried out in the real world - just be man
enough to say it instad of issuing the blanket line : "write managed C++
classes around your C++ classes". No one as yet (and that included MS
itself) afaik, has actually provided an example of using C++ classes
exported from a C++ DLL - so come on : can it be done or NOT ?. If yes
(everyone tells me it can - but has no examples) - HOW the hell is it
done - does anyone actually even know?. I provided a simple no brainer
C++ DLL and expected at least some pseudocode to show how I can call the
2/3 functions from C# - apparently, no one really knows how to do this ....
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