test-conn.cc

Go to the documentation of this file.

// test-conn.cc
// g++ -g -Wall -o test-conn test-conn.cc `sigc-config --cflags --libs`
#include <sigc++/sigc++.h>
#include <sigc++/chain.h>
#include <iostream>

using namespace SigC;

Signal0<void> global_sig;

class C : public Object
{
    int fInt;
public:
    C() : fInt(42) { cerr << "C()\n"; }
    ~C() { cerr << "~C()\n"; }
    Signal0<void> sig;
    int Get() { return fInt; }
};

class B : public Object
{
public:
    B() { cerr << "B()\n"; }
    ~B() { cerr << "~B()\n"; }
    void beep(C* c) { cerr << "c=" << (void*)c << "\n"; }
};

class A : public Object
{
    Ptr<B> bptr;
public: 
    A() { cerr << "A()\n"; }
    ~A() { cerr << "~A()\n"; }
    void Set(B* b) { bptr = b; }
};


class Main  : public Object
{
    A* a;
    C* c;
    Connection connection;
    bool save_connect;
    bool disconnect;

public:
    Main(bool savecon, bool dodiscon, bool doglobalsig) 
        : save_connect(savecon), disconnect(dodiscon) {
 
        c = new C;
        a = new A; 
        B* b = manage(new B);
        a->Set(b);
        if (save_connect)
            connection = c->sig.connect(bind(slot(*b,&B::beep),c));
        else
            c->sig.connect(bind(slot(*b,&B::beep),c));

        if (doglobalsig)
            global_sig.connect(slot(*this,&Main::hello));

    }
    void hello () { cerr << "Hello!\n"; }
    ~Main() {
        cerr << "In ~Main\n";
        if (save_connect && disconnect) connection.disconnect();
        delete a;
        delete c;
    }        
};


int main (int argc, char *argv[])
{
    if (argc != 4) {
        cerr << "usage: test-conn <saveconnnection> <do-disconnect> <do-global-sig>\n";
        cerr << "eg: test-con t t f\n";
        return 1;
    }

    bool one =   (argv[1][0] == 't');
    bool two =   (argv[2][0] == 't');
    bool three = (argv[3][0] == 't');

    Main* m = new Main(one,two,three);
    delete m;

    cerr << "Making a C\n";
    C* c = new C;
    cerr << ".. made\n";
    c->sig.emit();

    return 0;
} // end of main()

---