While experimenting a bit with libsigc++, I ran into some issues
regarding the type of a sigc::signal#. The following source shows that
I'd like to be able to range over sigc::signals no matter its specific
type and elaborate on that. I've tried to add explicit type information
regarding the slot (see 'connect(sigc:slot<..'), but without success,
apparently. Can anyone shed some light in this matter?
class SignalManager
{
public:
SignalManager() {}
// sigc::signal<void, int>* get_signal() // <- OK
sigc::signal_base* get_signal() // <- NOT OK
{
return &signal_print;
}
private:
sigc::signal<void, int> signal_print;
};
void on_print(int i)
{
std::cout << i << std::endl;
}
int main()
{
SignalManager sm;
sm.get_signal()->connect(
sigc::slot<void,int>(sigc::ptr_fun(&on_print)));
sm.get_signal()->emit(123);
return 0;
}
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