Re: Timeout problem

[Bob Caryl <bob fis-cal com>]

Hola Jorge,

Here's how you want to do this:

bool Protocol::control_servidor(int timer_number)
{
   // do something here
   return true;
}

void Protocol::init_function()
{
   sigc::slot<bool> my_slot = sigc::bind(sigc::mem_fun(*this, &Protocol::control_servidor),1);
   sigc::connection conn = Glib::signal_timeout().connect(my_slot, 1500);
}

The Glib::signal_timeout function is looking for a callback slot that 
has as its formal paramter an integer.  Your Protocol::control_servidor 
did not provide that and so the compiler complained. 

I apologize for not looking closer at this before.

Bob

Jorge Villalobos Beato wrote:

> Hi people. I'm trying to do a timer, so every 1500 miliseconds (1,5
> seconds) I want the function 'control_servidor' to be called. This
> function is declared as public in the class 'Protocol' ( bool
> control_servidor(void); ), but I want to call the one within the current
> object (a Protocol one), I mean, there's a function inside Protocol
> which start the timer to call another function of the same object.
>
> Reading the Gtkmm tutorial I found a chapter talking on that issue
> (http://www.gtkmm.org/gtkmm2/docs/tutorial/html/ch17.html) and this is
> what it says:
>
>  // Creation of a new object prevents long lines and shows us a little
>  // how slots work.  We have 0 parameters and bool as a return value
>  // after calling SigC::bind.
>  SigC::Slot0<bool> my_slot = SigC::bind(SigC::slot(*this, &TimerExample::on_timeout), m_timer_number);
>
>  // This is where we connect the slot to the Glib::signal_timeout()
>  SigC::Connection conn = Glib::signal_timeout().connect(my_slot, timeout_value);
>
>
> This what I'm doing at this moment, with 'timeout_value' equals to 1500
> and no 'm_timer_numer', because my function waits for no arguments.
> Doing the replacing, this is what I get:
>
> bool Protocol::control_servidor(){
>    //...
>    return true;
> }
>
> void Protocol::init_function(){
>
>    //...
>
>    SigC::Slot0<bool> my_slot =  SigC::bind(SigC::slot(*this,
> &Protocol::control_servidor));   //line 193
>    
>    Glib::signal_timeout().connect(my_slot, 1500);
>
>    //...
> }
>
> When compiled, got this error:
>
> protocol.cc:193: error: no matching function for call to
> `slot(Protocol&, bool (Protocol::*)())'
>
> Does anyone know what I'm doing wrong??
>
> Thanks a lot
>
> ----------------
> Jorge Villalobos Beato
> <tiusender gmail com>
> <tiusender.blogspot.com>
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