Re: [sigc] newbie questions

[Tim Mayberry <tmayberr redhat com>]

On Thu, 2006-01-19 at 16:28 -0800, Greg Schussman wrote:

> Questions:
>   1) Have I done something exceptionally goofy or not in the spirit of
> libsigc++?
>   2) Why does the tutorial give the namespace "sigc", but I have to
> use "SigC"?

You shouldn't have to use the SigC namespace, from what I understand it
that is for backwards compatibility with sigc++ 1.2

>   3) Why does sigc++/sigc++.h #include sigc++/signal.h, but not sigc
> ++/slot.h?

I think slot.h is also for the backwards compatibility. In your example
you should be using sigc::ptr_fun() rather than SigC::slot.

>   4) Why the segfault?

not sure, doesn't happen here, attaching revised example.

Tim.

#include <iostream>

#include <sigc++/sigc++.h>
#include <sigc++/slot.h>

using namespace std;

void hello() { cout << "hello, " << flush; }
void world() { cout << "world!" << endl; }

int main()
{
   // I wouldn't use signal as a variable name.
   sigc::signal<void> signal;

   signal.connect(sigc::ptr_fun(&hello));
   signal.connect(sigc::ptr_fun(&world));

   signal.emit(); // or just signal()

   cout << "Good night, Moon." << endl;
}