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  1. #include <iostream>
  2.  
  3. static int index()
  4. {
  5.     static int idx = std::ios_base::xalloc();
  6.     return idx;
  7. }
  8.  
  9. void callback(std::ios_base::event evt, std::ios_base& str, int index)
  10. {
  11.     (void)str;
  12.     (void)index;
  13.     if (evt == std::ios_base::erase_event)
  14.     {
  15.         std::cout << "Erase event" << std::endl;
  16.     }
  17. }
  18.  
  19. int main()
  20. {
  21.     std::cout.register_callback(callback, index());
  22. }
Success #stdin #stdout 0s 3424KB
comments (?)
stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/0tlcOr
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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