On Fri, 2006-08-18 at 07:03 -0700, NicolasA wrote:
> I have read all the examples in the gtk tutorial, I have 3 books on gnome
> and gtk but I haven't found a single example which shows how to pass more
> that 1 widget to the function.
Here you've got a full example:
// save as "test.c" compile with:
// gcc -g test.c -o test `pkg-config --cflags --libs gtk+-2.0`
// run with ./test
#include <gtk/gtk.h>
typedef struct _TwoWidgets {
GtkWidget *entry_name;
GtkWidget *entry_password;
} TwoWidgets;
void dlg_response (GtkDialog *dialog,
gint arg1,
gpointer user_data)
{
g_free (user_data);
gtk_widget_destroy (GTK_WIDGET(dialog));
gtk_main_quit();
}
void button_clicked (GtkButton *button,
gpointer user_data)
{
TwoWidgets* widgets;
widgets = (TwoWidgets*) user_data;
g_print("Name: %s\nPassword: %s\n\n",
gtk_entry_get_text (GTK_ENTRY(widgets->entry_name)),
gtk_entry_get_text (GTK_ENTRY(widgets->entry_password)));
}
int main(int argc, char **argv)
{
GtkWidget *dialog, *dialog_vbox;
GtkWidget *entry_name,*entry_password;
GtkWidget *button;
static GdkPixbuf *pixbuf;
GtkTreeModel *model;
TwoWidgets *widgets;
gtk_init (&argc, &argv);
dialog = gtk_dialog_new();
dialog_vbox = GTK_DIALOG (dialog)->vbox;
gtk_widget_show (dialog_vbox);
entry_name = gtk_entry_new ();
gtk_widget_show (entry_name);
gtk_box_pack_start (GTK_BOX (dialog_vbox), entry_name, TRUE, TRUE, 0);
entry_password = gtk_entry_new ();
gtk_widget_show (entry_password);
gtk_box_pack_start (GTK_BOX (dialog_vbox), entry_password, TRUE, TRUE,
0);
button = gtk_button_new_from_stock (GTK_STOCK_APPLY);
gtk_widget_show (button);
gtk_box_pack_start (GTK_BOX (dialog_vbox), button, FALSE, FALSE, 0);
widgets = g_malloc(sizeof(TwoWidgets));
widgets->entry_name = entry_name;
widgets->entry_password = entry_password;
g_signal_connect ( button,
"clicked",
G_CALLBACK (button_clicked),
widgets );
g_signal_connect ( dialog,
"response",
G_CALLBACK (dlg_response),
widgets );
gtk_widget_show (dialog);
gtk_main ();
return 0;
}
> Do I have to use the Gobject, which function of the API should I use?
You can use g_object_set_data and g_object_get_data on the button that
will be passed to the "clicked" callback:
// save as "test2.c" compile with:
// gcc -g test2.c -o test2 `pkg-config --cflags --libs gtk+-2.0`
// run with ./test2
#include <gtk/gtk.h>
void dlg_response (GtkDialog *dialog,
gint arg1,
gpointer user_data)
{
gtk_widget_destroy (GTK_WIDGET(dialog));
gtk_main_quit();
}
void button_clicked (GtkButton *button,
gpointer user_data)
{
gpointer *name, *password;
name = g_object_get_data (G_OBJECT(button), "entry_name");
password = g_object_get_data (G_OBJECT(button), "entry_password");
if( name && password ){
g_print("Name: %s\nPassword: %s\n\n",
gtk_entry_get_text (GTK_ENTRY(name)),
gtk_entry_get_text (GTK_ENTRY(password)));
}
}
int main(int argc, char **argv)
{
GtkWidget *dialog, *dialog_vbox;
GtkWidget *entry_name,*entry_password;
GtkWidget *button;
static GdkPixbuf *pixbuf;
GtkTreeModel *model;
gtk_init (&argc, &argv);
dialog = gtk_dialog_new();
dialog_vbox = GTK_DIALOG (dialog)->vbox;
gtk_widget_show (dialog_vbox);
entry_name = gtk_entry_new ();
gtk_widget_show (entry_name);
gtk_box_pack_start (GTK_BOX (dialog_vbox), entry_name, TRUE, TRUE, 0);
entry_password = gtk_entry_new ();
gtk_widget_show (entry_password);
gtk_box_pack_start (GTK_BOX (dialog_vbox), entry_password, TRUE, TRUE,
0);
button = gtk_button_new_from_stock (GTK_STOCK_APPLY);
gtk_widget_show (button);
gtk_box_pack_start (GTK_BOX (dialog_vbox), button, FALSE, FALSE, 0);
g_object_set_data (G_OBJECT(button),
"entry_name", entry_name);
g_object_set_data (G_OBJECT(button),
"entry_password", entry_password);
g_signal_connect ( button,
"clicked",
G_CALLBACK (button_clicked),
NULL );
g_signal_connect ( dialog,
"response",
G_CALLBACK (dlg_response),
NULL );
gtk_widget_show (dialog);
gtk_main ();
return 0;
}
> And if more than one widgets can be passed to the function, how can I access
> them ?
This depends on the method you used.
--
Iago Rubio
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