gimp_cairo_set_focus_line_pattern ()

gboolean            gimp_cairo_set_focus_line_pattern   (cairo_t *cr,
                                                         GtkWidget *widget);

Sets color and dash pattern for stroking a focus line on the given cr. The line pattern is taken from widget.

Since GIMP 2.6

gimp_cairo_surface_create_from_pixbuf ()

cairo_surface_t *   gimp_cairo_surface_create_from_pixbuf
                                                        (GdkPixbuf *pixbuf);

Create a Cairo image surface from a GdkPixbuf.

You should avoid calling this function as there are probably more efficient ways of achieving the result you are looking for.

Since GIMP 2.6