recently found FLTK (and FLUID) and really like it. One thing as yet I don't understand but I believe it may be more about C++ and ObjectOrietation than anything else (I am an assembler programmer). 

The code that FLUID produces is different from code I can find on the web.. eg

int main()
{
    Fl_Window fltkWindow(300, 400, "fltk Window");
        Fl_Button fltkButton (25, 20, 70, 50, "button1");
        Fl_Button *fluidButton = new Fl_Button(25, 80, 70, 50, "button2");
    fltkWindow.end();        // Not really required

    Fl_Window *fluidWindow = new Fl_Window(245, 255, "fluidWindow");
        Fl_Group* o = new Fl_Group(25, 20, 180, 220);
              { new Fl_Button(25, 20, 70, 50, "button1");
                new Fl_Button(25, 80, 70, 50, "button2");
              new Fl_Button(25, 140, 70, 50, "button3");
            }
    fluidWindow->end();
    fltkWindow.show();
    fluidWindow->show();
    return Fl::run();
}

It seems there are (at least) 2 different ways to code these calls. I am guessing the FLUID way is creating an instance of an Object (???) and the other way is not.

Anyone able to give me a quick heads up on what is expected.

Many thanks in advance

Cheers

Roger