我使用的 API 要求我将函数指针作为回调传递.我正在尝试从我的班级中使用此 API,但出现编译错误.
I'm using an API that requires me to pass a function pointer as a callback. I'm trying to use this API from my class but I'm getting compilation errors.
这是我在构造函数中所做的:
Here is what I did from my constructor:
m_cRedundencyManager->Init(this->RedundencyManagerCallBack);这无法编译 - 我收到以下错误:
This doesn't compile - I get the following error:
错误 8 错误 C3867:'CLoggersInfra::RedundencyManagerCallBack':函数调用缺少参数列表;使用&CLoggersInfra::RedundencyManagerCallBack"创建一个指向成员的指针
Error 8 error C3867: 'CLoggersInfra::RedundencyManagerCallBack': function call missing argument list; use '&CLoggersInfra::RedundencyManagerCallBack' to create a pointer to member
我尝试了使用 &CLoggersInfra::RedundencyManagerCallBack 的建议 - 对我不起作用.
I tried the suggestion to use &CLoggersInfra::RedundencyManagerCallBack - didn't work for me.
对此有何建议/解释??
Any suggestions/explanation for this??
我使用的是 VS2008.
I'm using VS2008.
谢谢!!
推荐答案这不起作用,因为成员函数指针不能像普通函数指针一样处理,因为它需要一个this"对象参数.
That doesn't work because a member function pointer cannot be handled like a normal function pointer, because it expects a "this" object argument.
相反,您可以传递一个静态成员函数,如下所示,在这方面就像普通的非成员函数:
Instead you can pass a static member function as follows, which are like normal non-member functions in this regard:
m_cRedundencyManager->Init(&CLoggersInfra::Callback, this);函数可以定义如下
static void Callback(int other_arg, void * this_pointer) { CLoggersInfra * self = static_cast<CLoggersInfra*>(this_pointer); self->RedundencyManagerCallBack(other_arg); }更多推荐
如何将类成员函数作为回调传递?
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