Interpretation of the C ++ callback function code example

The Application of C ++ callback functions is a common operation in actual program development. How can we quickly master this application skill for beginners? Here, I will explain the following code to learn more about the application skills.

Code example of the C ++ callback function:

 
 

  
  
#include < string> 
  
  
#include < iostream> 
  
  
#include < boost/function.hpp> 
  
  
using namespace std;  
  
  
using namespace boost;  
  
  
class Test  
  
  
{  
  
  
public:  
  
  
Test(){};  
  
  
virtual ~Test(){};  
  
  
void Handle(string& s, unsigned int lines)  
  
  
{  
  
  
for(int i=0; i<  lines; i++)  
  
  
{  
  
  
cout < <  s < <  endl;  
  
  
}  
  
  
};  
  
  
};  
  
  
template < class T> 
  
  
static void CallBack(T& t, boost::function< void 
(T*, string&, unsigned int)> f)  
  
  
{  
  
  
string s("test");  
  
  
f(&t, s, 3);  
  
  
};  
  
  
int main()  
  
  
{  
  
  
Test test;  
  
  
CallBack< Test>(test, &Test::Handle);  
  
  
return 0;  
  
  
} 
 
 

The preceding section describes C ++ callback functions.