+@@ -213,8 +213,8 @@
+ FILE *getUnicodeMapFile(GString *encodingName);
+ FILE *findCMapFile(GString *collection, GString *cMapName);
+ FILE *findToUnicodeFile(GString *name);
+- DisplayFontParam *getDisplayFont(GString *fontName);
+- DisplayFontParam *getDisplayCIDFont(GString *fontName, GString *collection);
++ virtual DisplayFontParam *getDisplayFont(GString *fontName);
++ virtual DisplayFontParam *getDisplayCIDFont(GString *fontName, GString *collection);
+ GString *getPSFile();
+ int getPSPaperWidth();
+ int getPSPaperHeight();