For newer versions of Windows® (Windows® 2000 and later) changes to the background window appear immediately. This is possible because the newer versions of Windows® support this capability directly. This mode of operation is called dynamic mode. See Options: Visibility.
For earlier versions of Windows®, a static mode is provided. In this mode, the background is refreshed when you make certain changes (such as moving the overlay or changing its size, or editing or erasing an object, or changing certain options). You can force an update at any time (such as when you change symbols or time frames or when new data is added to your chart). To force an update, simply press the Refresh button (or select Refresh from the menu).
ChartOverlay automatically determines whether or not dynamic mode is supported when it starts up.
Because dynamic mode requires the system to do more work, some users may experience slow operation (such as a sticky cursor) while in dynamic mode. Although this is rare, should you encounter it, you might want to try: