Efl_Cxx_API

Data Structures | Functions | Variables
Efl_Cxx_API

## Data Structures
struct | efl::eo::concrete
| Creates concrete versions for Eo wrappers. More...
struct | efl::eo::parent_type
| Type used to hold the parent passed to concrete Eo C++ constructors. More...
struct | efl::eo::parent_expr
| The expression type declaring the assignment operator used in the parent argument of the concrete Eo C++ class. More...
struct | efl::eo::inherit< D, E >
| Template-class that allows client code to inherit from EO C++ Classes without the need to make explicit calls to EO methods — that would naturally be necessary to register itself in the EO Subsystem. More...
struct | efl::eo::eo_init
| A simple RAII implementation to initialize and terminate the EO Subsystem. More...
struct | efl::eo::wref< T >
| Weak references to an EO Object. More...

## Functions
template<class CharT , class Traits >
std::basic_ostream< CharT, Traits > & | efl::eo::operator<< (std::basic_ostream< CharT, Traits > &os, concrete const &eo)
bool | efl::eo::operator== (concrete const &lhs, concrete const &rhs)
bool | efl::eo::operator!= (concrete const &lhs, concrete const &rhs)
template<typename T , typename U >
T | efl::eo::downcast (U object)
| Downcast `U` to `T`. More...

## Variables
parent_expr const | efl::eo::parent = {}
| Placeholder for the parent argument.

## Detailed Description

## Function Documentation

## ◆ downcast()

template<typename T , typename U >

T efl::eo::downcast | ( | U | object | ) |

Downcast `U` to `T`.

Parameters

  T | An EO C++ Class.
  U | An EO C++ Class.
  object | The target object.

Returns
  This function returns a new instance of `T` if the downcast is successful — otherwise it raises a `std::runtime_error`.