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  1. #include <iostream>
  2.  
  3. class Foo{
  4. public:
  5.     Foo(void* object): obj(object) {}
  6.  
  7.     void callFunc(void (*func)(void *)){
  8.         func(obj);
  9.     }
  10.  
  11. private:
  12.     void* obj;
  13. };
  14.  
  15. class Bar{
  16. public:
  17.     Bar(): foo(this) {}
  18.  
  19.     void callSomeFunc(){
  20.         foo.callFunc(someFuncAdapter);
  21.     }
  22.  
  23.     void someFunc(){
  24.         std::cout << "hi\n";
  25.     }
  26.  
  27.     static void someFuncAdapter(void *obj) {
  28.     	static_cast<Bar *>(obj)->someFunc();
  29.     }
  30.  
  31. private:
  32.     Foo foo;
  33. };
  34.  
  35. int main(){
  36.     Bar bar;
  37.     bar.callSomeFunc();
  38.     return 0;
  39. }
Success #stdin #stdout 0s 15240KB
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Standard input is empty
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hi
https://ideone.com/I4dH4b
language:
C++ (gcc 8.3)
created:
8 years ago
visibility:
public

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