【c++11】std::bind使用_linux c++ std::bind callback-优快云博客

本文链接：https://blog.youkuaiyun.com/wangkui1331/article/details/114266430

本文介绍C++标准库中std::bind的使用方法，包括如何绑定全局函数、静态成员函数及成员函数，并通过具体示例展示了不同绑定方式的应用场景。

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1.绑定全局函数
[
#include <iostream>
#include <functional>

typedef std::function<void(int, int)> callback;

void fun(int n1, int n2)
{
OutputDebugString(L"fun");
}

使用：
std::function<void(int, int)> ss1 = std::bind(fun, std::placeholders::_1, std::placeholders::_2);
ss1(1,2);

std::function<void(int)> ss2 = std::bind(fun, std::placeholders::_1, 2);
ss2(1);

std::function<void(int)> ss3 = std::bind(fun, 1, std::placeholders::_1);
ss3(2);

std::function<void()> ss4 = std::bind(fun, 1, 2);
ss4();

auto ss5 = std::bind(fun, std::placeholders::_1, std::placeholders::_2);
ss5(1, 2);

std::function<void(int, int)> ss6 = std::bind(fun2, std::placeholders::_1, 2, std::placeholders::_2);
ss6(1,3);

]

2.绑定static成员函数
[

#include <iostream>
#include <functional>

typedef std::function<void(int, int)> callback;

void fun(int n1, int n2)
{
OutputDebugString(L"fun");
}

class CTest
{
public:
   CTest()
   {
   }

~CTest()
{

}

   void test_fun(int n1, int n2)
   {
       OutputDebugString(L"test_fun");
   }

   static void static_test_fun(int n1, int n2)
   {
       OutputDebugString(L"static_test_fun");
   }

};

使用：

//static静态成员
callback ss7 = std::bind(CTest::static_test_fun, std::placeholders::_1, std::placeholders::_2);
ss7(1, 2);
]

3.绑定成员函数
[
#include <iostream>
#include <functional>

typedef std::function<void(int, int)> callback;

class CTest
{
public:
   CTest()
   {
   }

~CTest()
{

}

   void test_fun(int n1, int n2)
   {
       OutputDebugString(L"test_fun");
   }

   static void static_test_fun(int n1, int n2)
   {
       OutputDebugString(L"static_test_fun");
   }

};

使用：

//成员
CTest test;

callback ss8 = std::bind(&CTest::test_fun, &test, std::placeholders::_1, std::placeholders::_2);
ss8(1, 2);
]

---------------------------------------------------
完整代码：

#include <iostream>
#include <functional>

typedef std::function<void(int, int)> callback;

void fun(int n1, int n2)
{
OutputDebugString(L"fun");
}

void fun2(int n1, int n2, int n3)
{
OutputDebugString(L"fun2");
}

class CTest
{
public:
   CTest()
   {
   }

~CTest()
{

}

   void test_fun(int n1, int n2)
   {
       OutputDebugString(L"test_fun");
   }

   static void static_test_fun(int n1, int n2)
   {
       OutputDebugString(L"static_test_fun");
   }

};

使用：

//std::bind使用
std::function<void(int, int)> ss1 = std::bind(fun, std::placeholders::_1, std::placeholders::_2);
ss1(1,2);

std::function<void(int)> ss2 = std::bind(fun, std::placeholders::_1, 2);
ss2(1);

std::function<void(int)> ss3 = std::bind(fun, 1, std::placeholders::_1);
ss3(2);

std::function<void()> ss4 = std::bind(fun, 1, 2);
ss4();

auto ss5 = std::bind(fun, std::placeholders::_1, std::placeholders::_2);
ss5(1, 2);

std::function<void(int, int)> ss6 = std::bind(fun2, std::placeholders::_1, 2, std::placeholders::_2);
ss6(1,3);

   //static静态成员
   callback ss7 = std::bind(CTest::static_test_fun, std::placeholders::_1, std::placeholders::_2);
   ss7(1, 2);

//成员
CTest test;

callback ss8 = std::bind(&CTest::test_fun, &test, std::placeholders::_1, std::placeholders::_2);
ss8(1, 2);