internal static void ShowAboutWindow() { var mainWindowRect = EditorGUIUtility.GetMainWindowPosition(); var aboutRect = EditorGUIUtility.GetCenteredWindowPosition(mainWindowRect, WindowSize); AboutWindow w = GetWindowWithRect <AboutWindow>(aboutRect, true, "About Unity"); w.position = aboutRect; w.minSize = w.maxSize = WindowSize; w.m_Parent.window.m_DontSaveToLayout = true; }