MacArthur, Ian (SELEX GALILEO, UK) wrote a nice sample
> I'm not sure what the exact syntax for fltk-2 is, but it is basically
> similar.
it is nearly the same,
Sample for fltk2 without fluid but with membercallback and own window:
/*
* fltk2-config --compile button_callback.cxx
*/
#include <fltk/Window.h>
#include <fltk/Button.h>
#include <fltk/run.h>
#include <fltk/events.h>
#include <stdio.h>
using namespace fltk;
// --- Switchboard.h --------------------------------------------
template<class T> class Switchboard
{
typedef void (T::*MCB)(fltk::Widget*);
T* parent;
struct Stub
{
T* self; // current instance (class pointer)
MCB mcb; // member callback (function pointer)
Stub* next; // pointer to next stub
Stub(T* self, MCB
mcb,Stub*next=0):self(self),mcb(mcb),next(next) {}
void operator()(fltk::Widget* arg) const {(self->*mcb)(arg);}
}* list;
static void exec(fltk::Widget* w, void*p) {(*(Stub*)p)(w);}
public:
~Switchboard() {for(Stub*p;(p=list);list=list->next,delete p){};};
Switchboard(T*parent):parent(parent),list(0){};
void* stub(MCB mcb) {return list=new Stub(parent,mcb,list);}
fltk::Callback *operator()() { return &Switchboard<T>::exec;}
void connect(fltk::Widget*w, MCB mcb) {w->callback(&exec, stub(mcb));}
void operator()(fltk::Widget*w, MCB mcb) {w->callback(&exec,
stub(mcb));}
};
// --------------------------------------------------------------------
class MyWin:public Window
{
Switchboard<MyWin> connect;
Button b;
void onButton(Widget*w)
{
printf("event=%d\n",event());
}
public:
MyWin(int w, int h):Window(USEDEFAULT,USEDEFAULT,w,h,0,true)
,connect(this)
,b(25,25,80,40,"Quit")
{
end();
b.when(WHEN_CHANGED);
connect(&b,&MyWin::onButton);
}
int run(int argc, char*argv[])
{
show(argc,argv);
return fltk::run();
}
};
int main(int argc, char* argv[])
{
MyWin* win=new MyWin(376,278);
return win->run(argc,argv);
}
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