I'm experimenting with dao http://daovm.net/ and his author did an
amazing job creating a automated tool that can create bindings to almost
all fltk 1.3 including deriving fltk classes, but for it to work with
callbacks easily he needs to make "void do_callback(Fl_Widget* o,void*
arg=0)" a virtual function.
I propose to make this modification on the official FLTK sources.
Changes:
from: void do_callback(Fl_Widget* o,void* arg=0);
to: virtual void do_callback(Fl_Widget* o,void* arg=0);
With this modification examples like this works:
------
load DaoFLTK;
class Button1 : Fl_Button
{
sub do_callback( w : Fl_Widget, a : cdata ){
io.write( '\07' );
io.flush();
}
}
class Button2 : Fl_Button
{
sub do_callback( w : Fl_Widget, a : cdata ){
std.exit(0);
}
}
window = Fl_Window(320,65);
b1 = Button1(20, 20, 80, 25, '&Beep');
b2 = Fl_Button(120,20, 80, 25, '&no op');
b3 = Button2(220,20, 80, 25, 'E&xit');
window.end();
window.show();
Fl.run();
------
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