指向member function的指针的声明语法,以及指向"member selection运算符"的指针,其作用是作为 this 指针的空间保留者.这这也就是为什么 static member function(没有 this 指针)的类型是"函数指针",而不是"指向member function的指针"的原因. 使用一个"member function指针",假设并不用于 virtual function,多重继承,...
class MyClass { public: void myFunction() {} }; void (MyClass::*ptr)() = &MyClass::myFunction; // 正确 // void (MyClass::*ptr)() = MyClass::myFunction; // 错误 注意,在赋值时不需要使用&符号,因为成员函数名本身就代表函数的地址。 如果你确实需要修改指针的指向:重新考虑...
seminar.cpp: In member function ‘std::vector<unsigned char> Tom::Car::Car::road(Nor::Driving&)’: seminar.cpp:23:73: error: conversion from ‘std::_Bind_helper (Tom::Car::Car::*)(Nor::Range&), Tom::Car::Car*>::type’ {aka ‘std::_Bind (Tom::Car::Car::*(Tom::Car::C...
指定這個符號是否為成員函式的指標。 語法 C++ 複製 HRESULT get_isPointerToMemberFunction( BOOL* pRetVal); 參數 pRetVal [out] BOOL 的指標,指定這個符號是否為成員函式的指標。 傳回值 如果成功,則會傳回 S_OK;否則,會傳回 S_FALSE 或錯誤碼。 另請參閱 IDiaSymbol ...
参考资料: http://stackoverflow.com/questions/3050805/pointer-to-const-member-function-typedef http://www.cplusplus.com/reference/functional/mem_fun1_t/ http://www.cnblogs.com/taobataoma/archive/2007/08/30/875743.html http://www.cplusplus.com/reference/functional/mem_fun/ ...
ISO C++ forbids taking the address of a bound member function to form a pointer to member function. Say ‘&MyClass::f’ cannot convert ‘double (MyClass::*)(double, void*)’ to ‘double (*)(double, void*)’ in assignment. How should the correct assignment be stated?
Errors are: Invalid use of non-static member function 'void myClass::ShowMember()' Cannot convert 'void(myClass::)()' to 'void (myClass::*)()' in assignment So, what's going on? Nov 29, 2008 at 3:28am jsmith (5804) Try PMF = &myClass::ShowMember (note ampersand).Nov...
void Func1(); }; // Declare a pointer to member function Func1. void (BaseClass::*pmfnFunc1)() = &BaseClass::Func1; class Derived : public BaseClass { public: Derived(); // Derived class constructor. void Func2(); }; // Declare a pointer to member function Func2. void (Deriv...
Code // pointer to a member function#include<iostream>usingnamespacestd;classDog{public:voidwag_tail()const{ cout <<"Tail left. Tail right. Wagging tail!"<< endl; }voidbark()const{ cout <<"Barrrrrrrrrrrk!"<< endl; } };intmain(){ ...
And reported below error error: ISO C++ forbids taking the address of an unqualified or parenthesized non-static member function to form a pointer to member function. Say ‘&util::sum’ [-fpermissive]