Sig::SignalProxy< Slot > Class Template Reference

Callback, event handler connect policy. More...

#include <sig_proxies.h>

Public Member Functions
	SignalProxy (Signal< Slot > *sig)
virtual ConnectionProxy	connect (Slot const &what)
	Connect slot to the signal.
virtual	~SignalProxy ()

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Detailed Description

template<class Slot>
class Sig::SignalProxy< Slot >

Callback, event handler connect policy.

SignalProxy and friends are signal system for photonmm

Extending C- callbacks

SignalProxy can be used with C- widget without modifying the code as follows

1. decide which arguments will be passed to C++ handler

           typedef SigC::Slot2<long int, PhEvent_t*> CustomSlot;
   
           ...
   

2. create C- callback handler function.

           static int ev_my_callback (PtWidget_t*, void* data, PtCallbackInfo_t* cbinfo)
           {
                   // this part is mandatory
   
                   CustomSlot* slot = (CustomSlot*) data;
   
                   // extract actual arguments for the c++ handler form cbinfo.. on own..
   
                   // call C++ handler..
   
                   (void) (*slot) (cbinfo->reason, cbinfo->event);
         
                   ...
           }
   

3. use Sig::Callback for user callbacks resources of the widget

           // derivation from SigC::Object is mandatory 
   
           class C : public SigC::Object {
                   public:
   
                           void fun (long int, PhEvent_t*) 
                           {
                                   ...
   
                           }
           }
   
           ...
   
           PtWidget_t* widget;
           C o;
   
           ...
   
           Sig::SignalProxy<CustomSlot> sig (new Sig::Callback<CustomSlot> (&ev_my_callback, widget, Cw_CB_MYCUSTOM_CALLBACK));
   
           sig.connect (SigC::slot (&o, &C::fun));
   
   
           ...
   

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Constructor & Destructor Documentation

template<class Slot> Sig::SignalProxy< Slot >::SignalProxy (  Signal< Slot > *  sig  )  [inline]

template<class Slot> virtual Sig::SignalProxy< Slot >::~SignalProxy (   )  [inline, virtual]

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Member Function Documentation

template<class Slot> virtual ConnectionProxy Sig::SignalProxy< Slot >::connect (  Slot const &  what  )  [inline, virtual]

Connect slot to the signal.

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The documentation for this class was generated from the following file:

• sig_proxies.h

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Documentation for photonmm by Yakov <iakovz@gmail.com>.