指向委托的函数指针 [英] function pointer to a delegate
问题描述
嗨。
有没有办法在c ++ / cli中有一个指向委托的函数指针
允许我传递具有相同代理的委托签名为
方法的参数？
我正在使用托管代码。假设我们有2个代表：
public delegate void FirstDelegate（int i）;
public delegate void SecondDelegate（int i）;
classA :: method1（）
{
int i = 1;
doSomething（）;
m_obj-> FirstDelegate（i）;
}
A类::方法2（）
{
doSomething（）;
int j = 2;
m_obj-> SecondDelegate（j）;
}
有没有办法让一个函数指向一个委托，这样我就可以使用一个公共函数将委托作为一个
参数：
A类:: methodInsteadOf1And2（delegateFunctionPointer）
{
int i = 3 ;
m_obj-> delegateFunctionPointer（i）;
}
谢谢，
vcq
Hi.
Is there way to have a function pointer to a delegate in c++/cli that
would allow me to pass delegates with the same signatures as
parameters to a method?
I''m working with managed code. Let''s say we have 2 delegates:
public delegate void FirstDelegate( int i );
public delegate void SecondDelegate( int i );
classA::method1( )
{
int i = 1;
doSomething( );
m_obj->FirstDelegate( i );
}
class A::method2( )
{
doSomething( );
int j = 2;
m_obj->SecondDelegate( j );
}
Is there a way to have a function pointer to a delegate so that I can
just have a common function that would take the delegate as a
parameter:
class A::methodInsteadOf1And2( delegateFunctionPointer )
{
int i = 3;
m_obj->delegateFunctionPointer( i );
}
thanks,
vcq
推荐答案
vcquestions< vc ********* @ gmail.comkirjutas：
vcquestions <vc*********@gmail.comkirjutas:
你好。
有没有办法在c ++ / cli中有一个指向委托的函数指针
允许我传递具有相同代理的代理签名为
方法的参数？
我正在使用托管代码。假设我们有2个代表：
Hi.
Is there way to have a function pointer to a delegate in c++/cli that
would allow me to pass delegates with the same signatures as
parameters to a method?
I''m working with managed code. Let''s say we have 2 delegates:
在C ++中没有委托（也没有托管代码）。你可能会通过在一些MS新闻组或论坛上发帖来获得更好的答案。
在C ++中，你可以形成一个指向类中方法的指针，给定
签名，当实际调用
时，它可以解析为不同的实际方法。我很确定这对你没用，所以我不给你一个
的例子。
问候
Paavo
In C++ there are no delegates (nor managed code). You will probably get
better answers by posting in some MS newsgroups or forums.
In C++, you can form a pointer to a method in a class, with given
signature, which can resolve to different actual methods when actually
called. I am quite sure this is not helpful for you so I don''t give an
example.
Regards
Paavo
Paavo Helde< no **** @ ebi.eekirjutas：
Paavo Helde <no****@ebi.eekirjutas:
vcquestions< vc * ********@gmail.comkirjutas：
vcquestions <vc*********@gmail.comkirjutas:
>嗨。
是否可以使用函数指针c ++ / cli中的委托，
允许我将具有相同签名的代理传递给方法吗？
我正在使用托管代码。假设我们有两个代表：
>Hi.
Is there way to have a function pointer to a delegate in c++/cli that
would allow me to pass delegates with the same signatures as
parameters to a method?
I''m working with managed code. Let''s say we have 2 delegates:
在C ++中没有委托（也没有托管代码）。通过在一些MS新闻组或论坛上发帖，你可能会获得更好的答案。
In C++ there are no delegates (nor managed code). You will probably get
better answers by posting in some MS newsgroups or forums.
哎呀抱歉，混淆了新闻组（再次！）。我们处于一个微观的角色，所以
代表可能是关于话题的。太糟糕我什么都不知道他们
:-(
Paavo
Oops sorry, mixed up the newsgroup (again!). We are in a mircosoft ng, so
delegates are presumably on-topic. Too bad I don''t know anything about them
:-(
Paavo
vcquestions写道：
vcquestions wrote:
嗨。
有没有办法在c ++中有一个指向委托的函数指针/ cli
会允许我将具有相同签名的代表传递给方法吗？
我''使用托管代码。假设我们有2个代表：
public delegate void FirstDelegate（int i）;
public delegate void SecondDelegate（int i）;
Hi.
Is there way to have a function pointer to a delegate in c++/cli that
would allow me to pass delegates with the same signatures as
parameters to a method?
I''m working with managed code. Let''s say we have 2 delegates:
public delegate void FirstDelegate( int i );
public delegate void SecondDelegate( int i );
这是两个具有相同签名的委托类型。
That''s two delegate types with the same signature.
>
classA :: method1（）
{
int i = 1;
doSomething（）;
m_obj-> FirstDelegate（i）;
>
classA::method1( )
{
int i = 1;
doSomething( );
m_obj->FirstDelegate( i );
这不起作用，你不能使用带有类型名称的-operator。 />
也许我如果你更加谨慎地区分代表
类型，方法（也就是成员函数）和委托实例，我们将能够
来回答你的问题。
That won''t work, you can''t use the -operator with a type name.
Maybe if you are a little more careful to distinguish between delegate
types, methods (aka member functions), and delegate instances, we''ll be able
to answer your question.
}
A类::方法2（）
{
doSomething（）;
int j = 2;
m_obj-> SecondDelegate（j）;
}
有没有办法让一个函数指针给一个委托，这样我就可以使用一个通用的函数将委托作为一个代表作为
参数：
A类:: methodInsteadOf1And2（delegateFunctionPointer）
{
int i = 3;
m_obj-> delegateFunctionPointer（i）;
}
谢谢，
vcq
}
class A::method2( )
{
doSomething( );
int j = 2;
m_obj->SecondDelegate( j );
}
Is there a way to have a function pointer to a delegate so that I can
just have a common function that would take the delegate as a
parameter:
class A::methodInsteadOf1And2( delegateFunctionPointer )
{
int i = 3;
m_obj->delegateFunctionPointer( i );
}
thanks,
vcq
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