GtkSpell Tutorial

GtkSpell is pretty simple, including it in your program can be as simple as calling gtk_spell_checker_new, gtk_spell_checker_set_language and gtk_spell_checker_attach to attach a GtkSpellChecker to a GtkTextView, like this:

GtkTextView* view = gtk_text_view_new ();
GtkSpellChecker* spell = gtk_spell_checker_new ();
gtk_spell_checker_set_language (spell, "en_US", NULL);
gtk_spell_checker_attach (GTK_TEXT_VIEW (view));

The GtkSpellChecker then watches modifications to the GtkTextView and tries to highlight the misspellings. The GtkSpellChecker is automatically destroyed when the GtkTextView to which it is attached is destroyed.