Re: Gtk signal_connect problem

[regis <r floret laposte net>]

Le jeudi 23 mars 2006 �6:05 +0100, hm a �it :
> I would like to write simple application in gtk. There is a button defined in main () function. I`m connecting a signal function, with an clicked-event as follows :
> 
> gtk_signal_connect ( GTK_WIDGET ( ShitButton ), "clicked", GTK_SIGNAL_FUNC ( ReceivedLoad ), (gpointer)(Labelz) );
> 
> The last parameter is a type cast from GtkWidget * Labelz[10] to a gpointer. I need it, because I want a ReceivedLoad function, to create ten new labels. Here is a ReceivedLoad function : 
> 
> gint ReceivedLoad ( GtkWidget * w, gpointer * p, gpointer ** Labelz ) 
> { 
>     GtkWidget ** cLabelz; 
>     cLabelz = (GtkWidget**) Labelz; 
>     int i,j=0; 
>     for ( i = 0; i < 10; i ++ ) 
>     { 
> 
>                              (...) 
>         
>         *( cLabelz + i ) = gtk_label_new("X"); 
> 
>         g_print("\n%ld, [%i]", (long int)(cLabelz), i ); 
>         j = 0; 
>         //gtk_widget_show ( Labelz[i] ); 
> 
>     }    
>     g_print("Returned to signal\n"); 
>     
>     return 1;    
> }
> 
> Everything is going right, but when the function is going to return from signal call, program crashes with Segmentation fault. When I exchange return with exit, everything goes right, so the problem is in RETURNING from function.. What`s wrong and how to make it correct ?
> _______________________________________________

The signal prototype for "clicked" signal is 

void user_function( GtkWidget * widget , gpointer data );

not 
void user_function( GtkWidget *widget,gpointer * p , gpointer ** data )
                                      ^^^^^^^^^^^^^
Try this code
void ReceivedLoad( GtkWidget * w , GtkWidget ** labelz )
{
	(...)
	//return 1;
}

It works (I've tested it).

Also gtk_signal_connect is obsolete with gtk+-2.0 use g_signal_connect
instead (see gtk_signal.h)

Regards

R�s