I already looked there so I will keep on asking.
> > I can create the callback from fluid without problem. The issue I have is > > that I want to trigger the callback from outside of the GUI. In my case, I > > am reading in a state file which changes menu settings. When I examine the > > fluid generated code, it calls the callback I defined indirectly. > > Right; Have you read Greg's "Cheat Pages"? I'm pretty sure he covers this s= > ort of usage... > > Try, um... > > http://www.seriss.com/people/erco/fltk/#Menu_Toggle = > > > and the subsequent related examples, see if that helps at all. > > > > For example, I have a Fl_Menu_Item called "revdraworder" whose callback I > > want to trigger from some part of my program. Here is the fluid code > > generated for the callback: > > = > > > void Controls::cb_revdraworder_i(Fl_Menu_* o, void*) { > > // I defined this callback in fluid > > my_function( (bool)(o->mvalue()->value()) ); > > } > > = > > > void Controls::cb_revdraworder(Fl_Menu_* o, void* v) { > > // fluid generated this > > ((Controls*)(o->parent()->user_data()))->cb_revdraworder_i(o,v); > > } > > = > > > I need to pass a Fl_menu_ pointer to cb_revdraworder() but cannot figure > > out which one. Somewhere in my code I will write > > = > > > revdraworder->do_callback(w) > > = > > > which will call cb_revorder() which will call cb_revorder_i(). > > How do I know what the value of w is? > > > Note that the whole "cb_thing()" calling "cb_thing_i()" dance is just a con= > venience to allow fluid to use a static member function for the callback. = > > The callback function needs to be static, or perhaps even "plain C", to all= > ow the compiler to resolve it at compile time - indirection via the static = > member function to the "actual" widget callback method is then done... = > > But, if you are creating your own menu structure, or are adding/removing me= > nu items dynamically, you don't have to go that way - you can just have the= > callback be a regular (non-member) function that is called by the menu ite= > m, or which you can just call yourself. > Which may be simpler in your case? > > So, um, anyway, if Greg's examples don't help... Well, just keep asking! > > Cheers, > > > > > > SELEX Galileo Ltd > Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS= > 14 3EL > A company registered in England & Wales. Company no. 02426132 > ******************************************************************** > This email and any attachments are confidential to the intended > recipient and may also be privileged. If you are not the intended > recipient please delete it from your system and notify the sender. > You should not copy it or use it for any purpose nor disclose or > distribute its contents to any other person. > ******************************************************************** > _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
