where is my mistake ?

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<pre>#include <iostream>
using namespace std;

typedef void (*PFN)();

class A
{
public:
    void foo()
    {
        run(func);
    }

private:
    void run(PFN pfn1)
    {
        pfn1();
    }

    void func()
    {
        printf("run ");
    }
};

int main()
{
    A a;
    a.foo();

    system("pause");
    return 0;
}

while debuging following error shows:
error C3867: 'A::func': function call missing argument list; use '&A::func' to create a pointer to member

Posted 1-Oct-10 4:56am

wbgxx

Updated 1-Oct-10 9:51am

Aescleal

v3

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Aescleal 1-Oct-10 15:52pm

got rid of the Linux tag - this question is as relevant to Windows, Mobile phones or even embedded systems if they're written in C++

2 solutions

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Henry Minute · Answer 1 · 2010-10-01T05:47:00

Solution 1

Have a read of this[^].

See if you can't help yourself. :)

Posted 1-Oct-10 5:47am

Henry Minute

ARopo · Answer 2 · 2010-10-01T06:00:00

make

void func()
{
    printf("run ");
}

into the follow static member function

// static member Pointer
static void func()
{
    printf("run ");
}

And your syntax should be correct

or for a member function pointer try this

#include <iostream>
// Example Member function pointer
using namespace std;
class A;
typedef void (A::*PFN)();
class A
{
public:
    void foo()
    {
        run(&A::func);
    }
private:
    void run(PFN pfn1)
    {
        ((*this).*pfn1)();
    }
    void func()
    {
        printf("run ");
    }
};