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ctextviewgtk4

How to read data from TextView in gtk4?

I am building a calculator app using c language and gtk4, in activate function I have

    GtkWidget * entry;
    GObject * Sum = gtk_builder_get_object(builder, "sum");
    entry = gtk_entry_new ();
    gtk_entry_set_max_length (GTK_ENTRY (entry), 200);

    g_signal_connect(Sum, "clicked", G_CALLBACK(sum), (gpointer) entry);

and the callback function

static void sum(GtkWindow * window, gpointer user_data)
{
    const gchar *entry_text;
    //entry_text = gtk_entry_get_text (GTK_ENTRY (user_data));
    entry_text = gtk_entry_get_tabs(GTK_ENTRY(user_data));
    g_print("%s\n", entry_text);
}

this does not seem to work because when ever i press the sum key I get (null) printed to the console

How does one read data from a TextView and pass it to a callback function

Solution

  • GtkEntry implements GtkEditable interface. So you can do gtk_editable_get_text (GTK_EDITABLE (entry)) to get the text in a GtkEntry.