Fix drawing of empty boxes

[lyx.git] / src / mathed / InsetMathKern.h

diff --git a/src/mathed/InsetMathKern.h b/src/mathed/InsetMathKern.h
index be0e82166e68768bf0ae1ef5b8cc5bb6e4aff4dc..e985ad4dc3bc1e2515fbca76dfaa6ec1ce7b8101 100644 (file)
--- a/src/mathed/InsetMathKern.h
+++ b/src/mathed/InsetMathKern.h
@@ -38,6 +38,15 @@ public:
        void write(WriteStream & os) const;
        ///
        void normalize(NormalStream & ns) const;
+       ///
+       void mathmlize(MathStream &) const { }
+       ///
+       void htmlize(HtmlStream &) const { }
+       ///
+       void infoize2(odocstream & os) const;
+       ///
+       InsetCode lyxCode() const { return MATH_KERN_CODE; }
+
 private:
        virtual Inset * clone() const;
        /// width in em