Compile error using pointer-to-member function

[tron_thomas]

When this code is compiled:

#include <iostream>
using std::ostream;

class Value
{
public:
    explicit Value(int amount) : m_amount(amount) {}
    void Increment() { ++m_amount; }
    void WriteTo(ostream& stream) const { stream << m_amount; }
private:
    int m_amount;
};

ostream& operator << (ostream& stream, const Value& value)
{
    value.WriteTo(stream);
    return stream;
}

int main()
{
    typedef void (Value::*ValueMethod)(void);
    
    Value value(41);
    
    ValueMethod method = &Value::Increment;
    
    value.*method();
    
    std::cout << "The value is " << value << std::endl;

    return 0;
}

It will produce an error like this:
error: must use ‘.*’ or ‘->*’ to call pointer-to-member function in ‘method (...)’

for the code:

    value.*method();

What is needed to get this program to work correctly?

[Danny]

Try this instead:

(value.*method)();

For more information, see http://www.devx.com/cplus/Article/16328/0/page/3 tip #6.

[tron_thomas]

Yeah, I figured that out shortly after posting.
Thanks for the input.