This describes the functions used to operate on widgets. These can be used to set style, padding, size etc.
(Maybe I should make a whole section on accelerators.)
void gtk_widget_install_accelerator (GtkWidget *widget,
GtkAcceleratorTable *table,
gchar *signal_name,
gchar key,
guint8 modifiers);
void gtk_widget_remove_accelerator (GtkWidget *widget,
GtkAcceleratorTable *table,
gchar *signal_name);
void gtk_widget_activate (GtkWidget *widget);
void gtk_widget_set_name (GtkWidget *widget,
gchar *name);
gchar* gtk_widget_get_name (GtkWidget *widget);
void gtk_widget_set_sensitive (GtkWidget *widget,
gint sensitive);
void gtk_widget_set_style (GtkWidget *widget,
GtkStyle *style);
GtkStyle* gtk_widget_get_style (GtkWidget *widget);
GtkStyle* gtk_widget_get_default_style (void);
void gtk_widget_set_uposition (GtkWidget *widget,
gint x,
gint y);
void gtk_widget_set_usize (GtkWidget *widget,
gint width,
gint height);
void gtk_widget_grab_focus (GtkWidget *widget);
void gtk_widget_show (GtkWidget *widget);
void gtk_widget_hide (GtkWidget *widget);