public void ShutDown() { // Release the render count strings. foreach (DText aSent in RenderCountStrings) { aSent?.Shutdown(); } RenderCountStrings = null; // Release the position text strings. foreach (DText sent in VideoStrings) { sent?.Shutdown(); } VideoStrings = null; // Release the position text strings. foreach (DText sentence in PositionStrings) { sentence?.Shutdown(); } PositionStrings = null; PreviousPositions = null; // Release the fps text string. FpsString?.Shutdown(); FpsString = null; // Release the font object. Font1?.Shutdown(); Font1 = null; }