Le jeudi 23 mars 2006 à 16:05 +0100, hm a écrit :
> 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Also gtk_signal_connect is obsolete with gtk+-2.0 use g_signal_connect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
Régis
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