将无静态成员函数作为回调参数传递给manag [英] Passing none static member function as callback parameter to manag
问题描述
我的主应用程序类（非托管）有一个非静态成员
函数我需要作为委托传递给管理C＃方法。
在这个类的一个方法（unmamanged）中，我调用一个托管的C＃
方法（我使用gcnew来实例化管理类）。这个C＃方法的一个参数
是一个委托。我需要将无静态成员
函数作为委托（函数指针）作为托管C＃
函数调用中的参数传递。
eg
//托管C＃
名称空间MySpace
{
公共代表int MyDelegate（）;
MyDelegate rDelegate;
公共类管理
{
void ManagedFunction（MyDelegate del）
{
//做东西
}
} $ / $
}
//用VC ++ 6.0编写的非托管C ++
//.h
class Unmanaged
{
public：
Unmanaged（）;
~Unmanaged（）;
void UnmanagedFunc1（）;
void UnmanagedFunc2（）;
}
* .cpp
使用命名空间MySpace;
void Unmanaged :: UnmanagedFunc1（）
{
MySpace :: Managed ^ man = gcnew MySpace :: Managed;
//我需要这里的UnmanagedFunc2（）作为委托/回调作为ManagedFunction的
//参数。
man-> ManagedFunction（??）
}
void Unmanaged :: UnmanagedFunc2（）
{
}
非常感谢我能得到的所有帮助。
如果我还需要将一个字符串作为参数传递给
ManagedFunction（）。在非托管中，它是char *或CString。如何进行
转换以将其传递给托管。
感谢您的帮助。
Hi,
I have my main application class(unmanaged) that has a none static member
function that I need to pass as a delegate to managed C# method.
In one of the methods of this class(unmamanged), I am calling a managed C#
method(I use gcnew to instantiate the managed class). One of the parameters
of this C# method is a delegate. I need to pass the none static member
function as a delegate(function pointer) as a parameter in the managed C#
function call.
e.g.
//Managed C#
namespace MySpace
{
public delegate int MyDelegate();
MyDelegate rDelegate;
public class Managed
{
void ManagedFunction(MyDelegate del)
{
//do stuff
}
}
}
//Unmanaged C++ written in VC++ 6.0
//.h
class Unmanaged
{
public:
Unmanaged();
~Unmanaged();
void UnmanagedFunc1();
void UnmanagedFunc2();
}
*.cpp
using namespace MySpace;
void Unmanaged::UnmanagedFunc1()
{
MySpace::Managed ^man = gcnew MySpace::Managed;
//I need to pass UnmanagedFunc2() here as a delegate/callback as a
//parameter to ManagedFunction.
man->ManagedFunction(??)
}
void Unmanaged::UnmanagedFunc2()
{
}
Will appreciate all the help I can get on this.
Also what if I need to pass a string also as a parameter to
ManagedFunction(). In unmanaged it is a char* or a CString. How can I do the
conversion to pass it to managed.
Thanks for the help.
推荐答案
Haxan写道：
Haxan wrote:
我有我的主要应用程序class（unmanaged）有一个非静态成员
函数，我需要作为委托传递给托管C＃方法。
Hi,
I have my main application class(unmanaged) that has a none static member
function that I need to pass as a delegate to managed C# method.
在讨论了这个主题后（参见 http://tinyurl.com/h2kry) ，我的b $ b想出了两个非常简单的例子，展示了托管 - >无人管理
和unmanaged-> ;管理事件处理：
http://tweakbits.com/ManagedToUnmanagedCallback .cpp
http://tweakbits.com/UnmanagedToManagedCallback.cpp
你要求的是从非托管代码处理托管事件，
所以我的ManagedToUnmanagedCallback.cpp示例应该给你一个想法。
另一方面，我假设您的代码是用VC ++ 2005编写的，在混合模式下编译为
。看起来你的非托管类是用VC6编写的，
需要另一个级别的交互。换句话说，
Thunk类（参见我的例子）将调用内部的VC6 DLL。
除了我的例子，微软还有一个官方指南关于这个
主题：
http://msdn2.microsoft.com/en-us/library/367eeye0.aspx
最后，你必须照顾你的论证编组，例如
将String ^转换为const char * / const wchar_t *。您可以使用
StringToHGlobalAnsi / StringToHGlobalUni来执行此操作，如下所示：
http://tinyurl.com/kmzmh （参见Jochen的StringConvA / StringConvW课程）。
Tom
After some discussion of this topic (see http://tinyurl.com/h2kry), I
came up with two very simple examples demonstrating managed->unmanged
and unmanaged->managed event handling:
http://tweakbits.com/ManagedToUnmanagedCallback.cpp
http://tweakbits.com/UnmanagedToManagedCallback.cpp
What you''re asking for is handling managed events from unmanaged code,
so my ManagedToUnmanagedCallback.cpp example should give you an idea.
On the other hand, I assume your code is written in VC++ 2005, compiled
in mixed-mode. It looks like your unmanaged class is written in VC6,
which requires yet another level of interaction. In other words, the
Thunk class (see my example) will call a VC6 DLL inside.
In addition to my example, Microsoft has an official guide about this
subject too:
http://msdn2.microsoft.com/en-us/library/367eeye0.aspx
Finally, you have to take care of your argument marshaling, such as
converting String^ to const char* / const wchar_t*. You can use
StringToHGlobalAnsi/StringToHGlobalUni to do that, as shown here:
http://tinyurl.com/kmzmh (see Jochen''s StringConvA / StringConvW classes).
Tom
Tamas Demjen写道：
Tamas Demjen wrote:
这需要另一层次的互动。
which requires yet another level of interaction.
*间接，我的意思。
* indirection, I meant.
非常感谢Tamas。这看起来像我在寻找。感谢
提示。我将继续努力。
" Tamas Demjen"写道：
Thanks very Tamas. This looks like what I was looking for. Appreciate the
tips. I will work on it.
"Tamas Demjen" wrote:
Tamas Demjen写道：
Tamas Demjen wrote:
需要另一个级别的互动。
which requires yet another level of interaction.
*间接，我的意思。
* indirection, I meant.
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