connect.cpp

/*
    OpenGUI - Drawing & Windowing library

    Copyright (C) 1996,2002  Marian Krivos

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    nezmar@atlas.sk
*/

#include <fastgl/fastgl.h>

/*

*/
class foo : public fgl::FGConnector
{
        int a;
    public:
        foo() { a = 0; }

        // this is method that is called on the 'Control' activate
        virtual void OnSignal(FGConnector *sender, int val)
        {
            val = a;
            new fgl::FGWindow(0,rand()%700, rand()%500,90,60,"Event!");
            fgl::Snd(700, 200);
            // this send 'SIGNAL' back to the button -> no action
            RunSignal();
        }
};

class A : public fgl::FGConnector
{
    public:

        virtual void OnSignal(FGConnector *sender, int val)
        {
            fgl::gprintf(0, fgl::CWHITE,10,40,"Get a signal '%s' from %08x", (char *)val, sender);
        }
};

class B : public fgl::FGConnector
{
    public:

        virtual void OnSignal(FGConnector *sender, int val)
        {
            fgl::gprintf(0, fgl::CWHITE,10,10,"Get a signal '%s' from %08x", (char *)val, sender);
        }
};

int main(int argc, char **argv)
{
    fgl::FGApp MyApp(3,argc,argv,fgl::CWHITE,fgl::APP_ALL);

    fgl::FGWindow *MyWnd = new fgl::FGWindow(0,300,300,200,120,"Click to button");

    foo *x = new foo;

    // all the Controls contains 'FGConnector' class, i.e. this class
    // is it's parents.

    fgl::FGControl *eb = MyWnd->AddPushButton(68, 40, 90, 24, "New window");
    // connect PushButton with instance (*x) of the 'foo' class and set optional
    // parameter to the '1'.
    FGCONNECT(eb, x, (void *)1);
    // this is also possible ...
    FGCONNECT(x, eb, (void *)2);

    A a;
    B b;

    FGCONNECT(&a, &b, "message A");
    a.RunSignal();

    // back direct
    FGCONNECT(&b, &a, "message B");
    b.RunSignal();

    MyApp.Run();

    return 0;
}

---