1 files changed, 3 insertions, 0 deletions
diff --git a/src/outputgen.h b/src/outputgen.h
index 508534e..54be83a 100644
--- a/src/outputgen.h
+++ b/src/outputgen.h
@@ -29,6 +29,7 @@
 class ClassDiagram;
 class DotClassGraph;
 class DotInclDepGraph;
+class DotCallGraph;
 class DotGfxHierarchyTable;
 class DocNode;
 class MemberDef;
@@ -334,6 +335,8 @@ class OutputGenerator : public BaseOutputDocInterface
     virtual void endDotGraph(DotClassGraph &g) = 0;
     virtual void startInclDepGraph() = 0;
     virtual void endInclDepGraph(DotInclDepGraph &g) = 0;
+    virtual void startCallGraph() = 0;
+    virtual void endCallGraph(DotCallGraph &g) = 0;
     virtual void writeGraphicalHierarchy(DotGfxHierarchyTable &g) = 0;
     virtual void startQuickIndexItem(const char *s,const char *l) = 0;
     virtual void endQuickIndexItem() = 0;