GTK+ Forums

weiliang10 · Joined: 28 Apr 2008 Posts: 1

I am new to GTK and have a question with regards to callback for radio buttons.

I have created a group of 2 radio buttons as per the GTK tutorial:

Code: (C++)

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

.
GtkWidget *res;
GtkWidget *vboxmjsettings;
GSList *Group_Resolution;

.
.

ctx->res = gtk_radio_button_new_with_label (NULL, "500cpi");
gtk_box_pack_start (GTK_BOX (ctx->vboxmjsettings), ctx->res, TRUE, TRUE, 0);
gtk_widget_show (ctx->res);

ctx->Group_Resolution = gtk_radio_button_group(GTK_RADIO_BUTTON (ctx->res));

ctx->res = gtk_radio_button_new_with_label (ctx->Group_Resolution, "1000cpi");
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (ctx->res), TRUE);
ctx->res);
gtk_box_pack_start (GTK_BOX (ctx->vboxmjsettings), ctx->res, TRUE, TRUE, 0);
gtk_widget_show (ctx->res);
GTK_WIDGET_SET_FLAGS (ctx->res, GTK_CAN_DEFAULT);

How do I attach a callback function to each of the radio button?

I am not able to use the 'g_signal_connect' function since both the '500cpi' and '1000cpi' radio buttons are not widgets. My intention is to to have each of the radio button to call a function when selected.

Appreciate if someone could help me out. Thanks in advance.[/code]

Wolfgang · Familiar Face Joined: 05 Feb 2008 Posts: 42

GObject
+----GInitiallyUnowned
+----GtkObject
+----GtkWidget
+----GtkContainer
+----GtkBin
+----GtkButton
+----GtkToggleButton
+----GtkCheckButton
+----GtkRadioButton

So GtkRadioButton is definetly widget. If you want to detect which radiobutton causes signal, use g_object_set.