--- a/QTfrontend/hwform.h	Tue May 07 22:36:15 2019 +0200
+++ b/QTfrontend/hwform.h	Fri May 10 22:51:43 2019 +0200
@@ -125,6 +125,7 @@
         void ShowFatalErrorMessage(const QString &);
         void GetRecord(RecordType type, const QByteArray & record);
         void CreateNetGame();
+        void PlayOfficialServerDemo();
         void UpdateWeapons();
         void DeleteWeapons(QString weaponsName);
         void AddWeapons(QString weaponsName, QString ammo);