[sigc] signals and copy constructors
- From: Antonio Coralles <noche suapie reflex at>
- To: libsigc-list gnome org
- Subject: [sigc] signals and copy constructors
- Date: Tue, 04 Jan 2005 00:00:12 +0100
is there an elegant way to "change *p_obj in mem_fun(*p_obj, ...)"
after the signal is allredy attached to a concrete object , so that when
the copy constructor of that object is called, some_signal.emit(...)
calls the method in the object created by this copy constructor call ?
or is it better to think of a different design, so that this question
doesn't come up ?
to avoid misunderstandigs, here is somekind of example:
//just a useless signal
sigc::signal<void> someSignal;
//just a useless class
class Useless : public sigc::trackable
{
public:
void call_me() { ... }
};
//a useless scope
....
{
Useless u1;
someSignal.connect(sigc::mem_fun(u1, &Useless::call_me));
//ok now connected - but how can i automatically change the target
object to u2 - so that u2.call_me() is called due someSignal.emit() ?
Useless u2(u1); //imagine this call is made at a comletly different
part in my programm - for example in a clone method ....
....
}
....
[Date Prev][
Date Next] [Thread Prev][
Thread Next]
[
Thread Index]
[
Date Index]
[
Author Index]