> ...
> class prodatum_controller
> {
> // testdata
> int data[2];
> void set_data(int, int);
> int get_data(int);
> public:
> prodatum_controller();
> // ui callbacks
> void slider_cb(Fl_Slider*, void*);
> void button_cb(Fl_Button*, void*);
> // incoming MIDI data
> // ...
> };
>
> I am having problems connecting the callbacks implemented by the
> controller with the widgets from the UI:
> ...
> // tried different things here but none of them compile:
> device_info->callback((Fl_Callback*)button_cb);
> // error: âbutton_cbâ was not declared in this scope
> ...
> I am really not sure if I do as I should (C++ still confuses me).
This won't compile because of a quirk of callback handling in C++.
What you need to do is pass a 'static callback method' to callback()
and for that 'static callback method' to call the instance method.
This is covered in the info box in the Callbacks section of
http://www.fltk.org/documentation.php/doc-1.1/common.html#common
Cheers
D.
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