sigc::retype() alters a sigc::pointer_functor, a sigc::mem_functor or a sigc::slot in that it makes C-style casts to the functor's parameter types of all parameters passed through operator()().  
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| template<template< typename T_func, typename...T_arg > class T_functor, typename T_func , typename... T_arg> | 
| decltype(auto) | sigc::retype (const T_functor< T_func, T_arg... >& functor) | 
|  | Creates an adaptor of type sigc::retype_functor which performs C-style casts on the parameters passed on to the functor.  More... 
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| template<template< typename T_return, typename...T_arg > class T_functor, typename T_return , typename... T_arg> | 
| decltype(auto) | sigc::retype (const T_functor< T_return(T_arg...)>& functor) | 
|  | Creates an adaptor of type sigc::retype_functor which performs C-style casts on the parameters passed on to the functor.  More... 
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| template<typename T_return , typename T_functor > | 
| retype_return_functor< T_return, T_functor > | sigc::retype_return (const T_functor& functor) | 
|  | Creates an adaptor of type sigc::retype_return_functor which performs a C-style cast on the return value of the passed functor.  More... 
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sigc::retype() alters a sigc::pointer_functor, a sigc::mem_functor or a sigc::slot in that it makes C-style casts to the functor's parameter types of all parameters passed through operator()(). 
Use this adaptor for inline conversion between numeric or other simple types. 
- Example:
The functor that sigc::retype() returns can be passed directly into sigc::signal::connect().
- Example:
- sigc::signal<void(float)> some_signal; - void foo(int); 
This adaptor builds an exception in that it only works on sig::pointer_functor, sigc::mem_functor and sigc::slot because it needs sophisticated information about the parameter types that cannot be deduced from arbitrary functor types.
sigc::retype_return() alters the return type of an arbitrary functor. Like in sigc::retype() a C-style cast is performed. Usage sigc::retype_return() is not restricted to libsigc++ functor types but you need to specify the new return type as a template parameter.
- Example:
- float foo(); - std::cout << sigc::retype_return<int>(&foo)();  
template <template< typename T_func, typename...T_arg > class T_functor, typename T_func , typename... T_arg> 
  
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          | decltype(auto) sigc::retype | ( | const T_functor< T_func, T_arg... > & | functor | ) |  |  | inline | 
 
Creates an adaptor of type sigc::retype_functor which performs C-style casts on the parameters passed on to the functor. 
- Parameters
- 
  
    | functor | Functor that should be wrapped. |  
 
- Returns
- Adaptor that executes functor performing C-style casts on the paramters passed on. 
 
 
template <template< typename T_return, typename...T_arg > class T_functor, typename T_return , typename... T_arg> 
  
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          | decltype(auto) sigc::retype | ( | const T_functor< T_return(T_arg...)> & | functor | ) |  |  | inline | 
 
Creates an adaptor of type sigc::retype_functor which performs C-style casts on the parameters passed on to the functor. 
- Parameters
- 
  
    | functor | Functor that should be wrapped. |  
 
- Returns
- Adaptor that executes functor performing C-style casts on the paramters passed on. 
 
 
template <typename T_return , typename T_functor > 
  
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          | retype_return_functor<T_return, T_functor> sigc::retype_return | ( | const T_functor & | functor | ) |  |  | inline | 
 
Creates an adaptor of type sigc::retype_return_functor which performs a C-style cast on the return value of the passed functor. 
The template argument T_return specifies the target type of the cast.
- Parameters
- 
  
    | functor | Functor that should be wrapped. |  
 
- Returns
- Adaptor that executes functor performing a C-style cast on the return value.