c - Gtk change multiple labels on button click -


how can change multible label values on single button click.normally on button click signal connect can give 1 user data. example code

void show_loop(gtkwidget *widget, gpointer user_data) {     char buf[5];     int no = txbuf.plbuf[7];   sprintf(buf, "%d",no);   gtk_label_set_text(gtk_label(user_data), buf); }  id_label=gtk_widget (gtk_builder_get_object (builder, "label24")); dlc_label=gtk_widget (gtk_builder_get_object (builder, "label25"));  check = gtk_widget (gtk_builder_get_object (builder, "button3")); g_signal_connect (check, "clicked", g_callback (show_loop), dlc_label);

i want change both labels on single button click.

typically define, allocate , fill struct contains widgets may have changed dynamically in initialization code:

typedef struct appdata {     gtkwidget *id_label;     gtkwidget *dlc_label; } appdata;  ...  appdata *app_data = g_new0 (appdata, 1); app_data->id_label = gtk_widget (gtk_builder_get_object (builder, "label24")); app_data->dlc_label = gtk_widget (gtk_builder_get_object (builder, "label25"));

the use app_data userdata parameter , can access widgets inside signal handler e.g. app_data->id_label.


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