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  1. #include <functional> 
  2.  
  3. struct Button {
  4.     struct Controller {
  5.         virtual void onPressed(Button &) = 0;
  6.     };
  7.  
  8.     Button(Controller * controller);
  9. };
  10.  
  11. namespace callbacks {
  12.  
  13. struct Button {
  14.     typedef std::function<void(Button &)> Callback;
  15.  
  16.     Button(const Callback & callback) : callback(callback) {}
  17.  
  18.     Callback callback;
  19. };
  20.  
  21. }
  22.  
  23.  
  24. int main()
  25. {
  26. }
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https://ideone.com/7l7QD
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

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