help with sigc::mem_fun

[Radu Brehar <radubrehar yahoo co uk>]

Hello,

I'm new to gtkmm, so hope you don't mind me having a
few basic questions.

I'll try to be straightforward. I have a button, that
for example wants to do something with an object which
is an instance of a class called "Child". In the
constructor of the button (called ButtonAdd) I do

m_button.signal_clicked ().connect
(sigc::mem_fun(*this,
&ButtonAdd::on_button_clicked,Child *));


and I have a method

void ButtonAdd::on_button_clicked(Child *)


I tried in many different ways, and I know that using
mem_fun(*this,&ButtonAdd::on_button_clicked)) without
any other parameter, and having the
on_button_clicked() method without paramaters works,
but I don't know how to send this method a parameter.

Another question: In the main function of my
application, I have for example

int main (int argc, char *argv[]){
	Gtk::Main kit (argc, argv);
	
	
	ButtonAdd add_button;
	Child * c=new Child();
	Gtk::Main::run(add_button);
	return 0;
};

and this is fine. But how do I transmit for example
the  c object (and instance of Child class) to the
on_button_clicked() method of ButtonAdd or to the
constructor of ButtonAdd, which then should transmit
it over to the on_button_clicked method?

Thank you in advance for your help.
Radu.


		
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