add function to get children of a canvas item.

src/zmapWindow/items/zmapWindowCanvasItem.c

@@ -27,9 +27,9 @@
  *
  * Exported functions: See XXXXXXXXXXXXX.h
  * HISTORY:
- * Last edited: Sep 17 14:13 2009 (edgrif)
+ * Last edited: Oct 12 14:05 2009 (edgrif)
  * Created: Wed Dec  3 09:00:20 2008 (rds)
- * CVS info:   $Id: zmapWindowCanvasItem.c,v 1.13 2009-09-24 13:29:11 edgrif Exp $
+ * CVS info:   $Id: zmapWindowCanvasItem.c,v 1.14 2009-10-14 16:55:46 edgrif Exp $
  *-------------------------------------------------------------------
  */
 
@@ -758,6 +758,20 @@ ZMapWindowCanvasItem zMapWindowCanvasItemIntervalGetTopLevelObject(FooCanvasItem
 }
 
 
+GList *zMapWindowCanvasItemGetChildren(ZMapWindowCanvasItem *parent)
+{
+  GList *children =  NULL ;
+  FooCanvasGroup *foo_group ;
+  
+  if (ZMAP_IS_CANVAS_ITEM(parent)
+      && FOO_IS_CANVAS_GROUP(parent)
+      && (foo_group = FOO_CANVAS_GROUP(parent)))
+      children = foo_group->item_list ;
+
+  return children ;
+}
+
+
 void zMapWindowCanvasItemSetIntervalColours(ZMapWindowCanvasItem canvas_item,
 					    ZMapStyleColourType  colour_type,
 					    GdkColor            *default_fill_colour)

src/zmapWindow/items/zmapWindowCanvasItem.h

@@ -27,9 +27,9 @@
  *
  * Exported functions: See XXXXXXXXXXXXX.h
  * HISTORY:
- * Last edited: Jul 27 12:41 2009 (rds)
+ * Last edited: Oct 12 13:59 2009 (edgrif)
  * Created: Wed Dec  3 08:21:03 2008 (rds)
- * CVS info:   $Id: zmapWindowCanvasItem.h,v 1.5 2009-07-27 12:09:29 rds Exp $
+ * CVS info:   $Id: zmapWindowCanvasItem.h,v 1.6 2009-10-14 16:55:46 edgrif Exp $
  *-------------------------------------------------------------------
  */
 
@@ -106,6 +106,7 @@ FooCanvasItem *zMapWindowCanvasItemGetInterval(ZMapWindowCanvasItem canvas_item,
 					       ZMapFeatureSubPartSpan *sub_feature_out);
 
 ZMapWindowCanvasItem zMapWindowCanvasItemIntervalGetObject(FooCanvasItem *item);
+GList *zMapWindowCanvasItemIntervalGetChildren(ZMapWindowCanvasItem *parent) ;
 ZMapWindowCanvasItem zMapWindowCanvasItemIntervalGetTopLevelObject(FooCanvasItem *item);
 ZMapFeatureSubPartSpan zMapWindowCanvasItemIntervalGetData(FooCanvasItem *item);