-#define COLUMNS(obj) (GTK_CHECK_CAST((obj), TYPE_COLUMNS, Columns))
-#define COLUMNS_CLASS(klass) \
- (GTK_CHECK_CLASS_CAST((klass), TYPE_COLUMNS, ColumnsClass))
-#define IS_COLUMNS(obj) (GTK_CHECK_TYPE((obj), TYPE_COLUMNS))
-#define IS_COLUMNS_CLASS(klass) (GTK_CHECK_CLASS_TYPE((klass), TYPE_COLUMNS))
+#define COLUMNS(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), TYPE_COLUMNS, Columns))
+#define COLUMNS_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass), TYPE_COLUMNS, ColumnsClass))
+#define IS_COLUMNS(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), TYPE_COLUMNS))
+#define IS_COLUMNS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), TYPE_COLUMNS))
GtkWidget *columns_new(gint spacing);
void columns_set_cols(Columns *cols, gint ncols, const gint *percentages);
void columns_add(Columns *cols, GtkWidget *child,
gint colstart, gint colspan);
void columns_taborder_last(Columns *cols, GtkWidget *child);
void columns_force_left_align(Columns *cols, GtkWidget *child);
GtkWidget *columns_new(gint spacing);
void columns_set_cols(Columns *cols, gint ncols, const gint *percentages);
void columns_add(Columns *cols, GtkWidget *child,
gint colstart, gint colspan);
void columns_taborder_last(Columns *cols, GtkWidget *child);
void columns_force_left_align(Columns *cols, GtkWidget *child);