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Pooya65

boost.signal and class

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hi how can i connect a member of class to the boost.signal?? for example, i want to connect func1 of the flowing class to the signal:
;
class test
{
public:
  void func1(){cout << "hello world" << endl;};
};

;

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you have to bind 'this' pointer with member function first:

someSignal.connect(boost::mem_fn(&test::func1));

of

someSignal.connect(boost::bind(&test::func1, _1));

use second when there is more parameters to pass to a method call, and check out boost::bind documentation

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hi

i try it. but this isnt work:


class test
{
public:
void func()
{
cout << "hello class" << endl;
}
};

void main(void)
{
test a;
boost::signal<void ()> sig;

sig.connect(boost::mem_fn(&test::func));

sig();
}

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The example posted by noe isn't actually correct, it should be:
sig.connect(boost::bind(&test::func, &a));
That is, you have to actually pass an instance for "this" as the second parameter.

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