gimpguides: GIMP Library Reference Manual

gimpguides

gint32	gimp_image_add_hguide ()
gint32	gimp_image_add_vguide ()
gboolean	gimp_image_delete_guide ()
gint32	gimp_image_find_next_guide ()
GimpOrientationType	gimp_image_get_guide_orientation ()
gint	gimp_image_get_guide_position ()

gint32
gimp_image_add_hguide (gint32 image_ID,
                       gint yposition);

gint32
gimp_image_add_vguide (gint32 image_ID,
                       gint xposition);

gboolean
gimp_image_delete_guide (gint32 image_ID,
                         gint32 guide_ID);

gint32
gimp_image_find_next_guide (gint32 image_ID,
                            gint32 guide_ID);

GimpOrientationType
gimp_image_get_guide_orientation (gint32 image_ID,
                                  gint32 guide_ID);

gint
gimp_image_get_guide_position (gint32 image_ID,
                               gint32 guide_ID);