pointer_functor3 wraps existing non-member functions with 3 argument(s).  
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#include <sigc++/functors/ptr_fun.h>
template<class T_arg1, class T_arg2, class T_arg3, class T_return>
class sigc::pointer_functor3< T_arg1, T_arg2, T_arg3, T_return >
pointer_functor3 wraps existing non-member functions with 3 argument(s). 
Use the convenience function ptr_fun() to create an instance of pointer_functor3.
The following template arguments are used:
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_return > 
      
 
 
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_return > 
 
Constructs an invalid functor. 
 
 
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_return > 
 
Constructs a pointer_functor3 object that wraps an existing function. 
- Parameters
- 
  
    | _A_func | Pointer to function that will be invoked from operator()(). |  
 
 
 
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_return > 
 
Execute the wrapped function. 
- Parameters
- 
  
    | _A_a1 | Argument to be passed on to the function. |  | _A_a2 | Argument to be passed on to the function. |  | _A_a3 | Argument to be passed on to the function. |  
 
- Returns
- The return value of the function invocation. 
 
 
template <class T_arg1 , class T_arg2 , class T_arg3 , class T_return >