Вопрос C++ Указатели на функции

[Makc_xD]

class spin{
public:
spin(int a)
{
if (a == 0)
doSpin = &spin::fullSpin;
else
doSpin = &spin::halfSpin;
}
void (spin:: * doSpin) ();

private:
fullSpin() { }
halfSpin() { }
};

int main()
{
spin test(1);
test.doSpin();
}

test.doSpin(); подчеркивает как ошибку, если навести написано это:
Error: выражение перед скобками вероятного вызова должно иметь тип функции (pointer-to-)

При попытке скомпилировать выдает вот это:

1>исходный код. cpp(24): error C2064: результатом вычисления фрагмента не является функция, принимающая 0 аргументов

Помогите пожалуйста

 

[dompetri]

Вызов указателя на метод - оператор .* Указатель на метод - test.doSpin Значит, (test.*(test.doSpin))();

 

[trais]

(test.*doSpin)();

 

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