passing member function as function pointer
You can't. You either pass a pointer to a static method or Parent has to accept also a pointer to the object. You might want to look at boost::bind ...,If you need to access any non-static member of your class and you need to stick with function pointers, e.g., because the function is part of a C interface, your best option is to always pass a void* to your function taking function pointers and call your, To call a member function by pointer, you need two things: A pointer to the object and a pointer to the function. You need both in ..., You can accomplish this using std::function and std::bind : #include <functional> #include <iostream> #include <string> class Work public: ...,Using std::function and std::bind as suggested in my comment makes it very easy: ... #include <functional> class ClassXY std::function<void()> function; public: ... , ClassName::add is a non-static member function, an instance of ClassName is needed for it to be ... or use std::bind and bind this pointer:, func_ptr p = &test::get_pc // Ok, using class scope. Finally, when you make a call to a function pointer pointing to a member function, you must call it with an instance of the class that the function is a member of. For instance: (this->*cb_func), The result of std::bind is a complicated C++ object. It has to store all the bound arguments, for example. So it is most definitely not convertible to ...,跳到 How do I pass a pointer-to-member-function to a signal ... - Because a member function is meaningless without an object to ...
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 passing member function as function pointer 相關參考資料
How Can I Pass a Member Function to a Function Pointer? - Stack ...
You can't. You either pass a pointer to a static method or Parent has to accept also a pointer to the object. You might want to look at boost::bind ... https://stackoverflow.com How can I pass a member function where a free function is expected ...
If you need to access any non-static member of your class and you need to stick with function pointers, e.g., because the function is part of a C interface, your best option is to always pass a void* ... https://stackoverflow.com How do you pass a member function pointer? - Stack Overflow
To call a member function by pointer, you need two things: A pointer to the object and a pointer to the function. You need both in ... https://stackoverflow.com how to pass a member function as a function pointer? - Stack Overflow
You can accomplish this using std::function and std::bind : #include <functional> #include <iostream> #include <string> class Work public: ... https://stackoverflow.com Pass an objects member function as argument (function pointer ...
Using std::function and std::bind as suggested in my comment makes it very easy: ... #include <functional> class ClassXY std::function<void()> function; public: ... https://stackoverflow.com Pass Member Function as Parameter to other Member Function (C++ 11 ...
ClassName::add is a non-static member function, an instance of ClassName is needed for it to be ... or use std::bind and bind this pointer: https://stackoverflow.com Passing a pointer to a class member function as a parameter ...
func_ptr p = &test::get_pc // Ok, using class scope. Finally, when you make a call to a function pointer pointing to a member function, you must call it with an instance of the class that the fun... https://stackoverflow.com Passing member function pointer to the c-style function - Stack ...
The result of std::bind is a complicated C++ object. It has to store all the bound arguments, for example. So it is most definitely not convertible to ... https://stackoverflow.com Pointers to Member Functions, C++ FAQ - Standard C++
跳到 How do I pass a pointer-to-member-function to a signal ... - Because a member function is meaningless without an object to ... https://isocpp.org |