Re: [paragui-users] re: loadlayout

[Andrew Ford]

What about static proxy functions that pass the
message on to whatever dynamic function you want to
handle it?  

messageHandler( message )
{
  sendMessageToDynamicHandler( message, handler )
}

widget->SetEventCallback( messageHandler )

--- Alexander Pipelka <address@hidden> wrote:
> Am Mit, 2002-04-17 um 16.15 schrieb Keith Swyer:
> > thanks. is it possible have the actual functions
> loaded dynamically at
> > runtime? this is most likley away from the
> > scope of the current ParaGUI, but something I am
> interested in doing if not
> > currently available. Reason being, i am looking at
> a program which has
> > several similar areas, with more or less buttons
> than another, and would
> > like to keep coding sizes minimal to reduce
> re-compiling and make it more
> > expandable easier.
> 
> Well, that's beyond the scope currently.
> 
> A workaround would be to reconnect all callbacks
> after loading the
> functions from a shared lib. 
> 
> e.g.: You have 2 widgets (w1, w2) calling callback
> functions (c1,c2)
> implemented differently in library1, library2.
> 
> dlopen(library1)
> c1 = dlsym(library1, function1)
> c2 = dlsym(library1, function2)
> 
> w1->SetEventCallback(..., c1);
> w2->SetEventCallback(..., c2);
> 
> some time later you might do:
> 
> dlopen(library2)
> c1 = dlsym(library2, function1)
> c2 = dlsym(library2, function2)
> 
> w1->SetEventCallback(..., c1);
> w2->SetEventCallback(..., c2);
> 
> Don't expect the code above to pass any compiler run
> :))
> 
> But beware! This can be dangerous.
> 
> Alex
> 
> 
> > 
> > --Keith
> > 
> > Am Mit, 2002-04-17 um 15.36 schrieb Keith Swyer:
> > > hi, just wondering how to use the loadloayout
> function and connect a
> > button
> > > in the layout to a function.
> > 
> > Quite easy :))
> > 
> > - load your layout via LoadLayout()
> > 
> > - get a pointer to the widget e.g.:
> > PG_Widget* my_widget =
> PG_Application::GetWidgetByName("widgetname");
> > 
> > - connect your widget to the callback
> > my_widget->SetEventCallback(...)
> > or
> > my_widget->SetEventObject(...)
> > 
> > That's it.
> > Have fun.
> > 
> > Alex
> > 
> > 
> > 
> >
>
@------------------------------------------------------------
> > Keith Swyer
> > Software Engineer
> > 
> > www.adventus.com
> >
>
@-------------------------------------------------------------
> > 
> > 
> > _______________________________________________
> > paragui-users mailing list
> > address@hidden
> >
>
http://mail.freesoftware.fsf.org/mailman/listinfo/paragui-users
> > 
> 
> 
> 
> 
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>
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