diff --git a/MdiWindow.cpp b/MdiWindow.cpp
index a5b5ace..8c1951d 100644
--- a/MdiWindow.cpp
+++ b/MdiWindow.cpp
@@ -783,14 +783,14 @@
         fprintf(file, "[%s]\n", path.back().c_str());
         fprintf(file, "class=%s\n", className);
     }
-    virtual void leaveObject(const char* className, const char* objectName)
+    virtual void leaveObject(const char* /*className*/, const char* objectName)
     {
         fprintf(file, "; end of %s\n\n", objectName);
         path.pop_back();
         //fprintf(file, "--Leaving %s (%s)\n", objectName, className);
     }
-    virtual void visit(const char* className,
-                        const char* propertyName, QVariant::Type typ, QVariant& value)
+    virtual void visit(const char* /*className*/,
+                        const char* propertyName, QVariant::Type /*typ*/, QVariant& value)
     {
         //fprintf(file, "----Property:  %s %s::%s = %s\n", QVariant::typeToName(typ),
         //            className, propertyName, value.toString().toLocal8Bit().data());
@@ -846,14 +846,14 @@
         fprintf(file, "[%s]\n", path.back().c_str());
         fprintf(file, "class=%s\n", className);
     }
-    virtual void leaveObject(const char* className, const char* objectName)
+    virtual void leaveObject(const char* /*className*/, const char* objectName)
     {
         fprintf(file, "; end of %s\n\n", objectName);
         path.pop_back();
         //fprintf(file, "--Leaving %s (%s)\n", objectName, className);
     }
-    virtual void visit(const char* className,
-                        const char* propertyName, QVariant::Type typ, QVariant& value)
+    virtual void visit(const char* /*className*/,
+                        const char* propertyName, QVariant::Type /*typ*/, QVariant& value)
     {
         //fprintf(file, "----Property:  %s %s::%s = %s\n", QVariant::typeToName(typ),
         //            className, propertyName, value.toString().toLocal8Bit().data());