1 files changed, 7 insertions, 4 deletions
diff --git a/xs/src/libslic3r/Utils.hpp b/xs/src/libslic3r/Utils.hpp
index e5157741e..921841a27 100644
--- a/xs/src/libslic3r/Utils.hpp
+++ b/xs/src/libslic3r/Utils.hpp
@@ -91,10 +91,13 @@ public:
     ~PerlCallback() { this->deregister_callback(); }
     void register_callback(void *sv);
     void deregister_callback();
-    void call();
-    void call(int i);
-    void call(int i, int j);
-//    void call(const std::vector<int> &ints);
+    void call() const;
+    void call(int i) const;
+    void call(int i, int j) const;
+    void call(const std::vector<int>& ints) const;
+    void call(double d) const;
+    void call(double x, double y) const;
+    void call(bool b) const;
 private:
     void *m_callback;
 };